Questions on Algebra in Finance answered by real tutors!

Tutors Answer Your Questions about Finance (FREE)

Question 989354: An auditorium seats, 1,073 people. Each row has the same number of seats, and there are more than thirty rows. How many seats are there in each row?
Click here to see answer by solver91311(24713)

Question 989353: Kim won some money. She spent $25 to have her hair cut, and lent one fifth of the remaining money to a friend. After she deposited two thirds of what was lent in the bank, she still had $40. How much did she win?
Click here to see answer by solver91311(24713)

Question 989487: An auditorium seats 1073 people. Each row has the same number of seats, and there are more than 30 rows. How many seats are in each row?
Click here to see answer by Alan3354(69443)

Question 989720: Could you rearange this formula to solve I and also rearange it to solve N
I can't find it out.
FV = PV * ( 1 + I ) ^ N
where
FV =future value
PV =present value
I =interest rate
N =periods
Thank you very much
Alain
Click here to see answer by rothauserc(4718)

Question 989749: what is the equation in standard form of a perpendicular line that's passes through (5,1)._______y+4=-4(x-2)this equation is the beginning problem u use to answer the problem pls help
Click here to see answer by KMST(5328)

Question 989651: Correct way
Let f (x) =
Determine whether f is continuous from both sides at 0, continuous from the left at 0, continuous from the right at 0, or discontinuous at 0.

Thank you
Click here to see answer by ikleyn(52781)

Question 989593: 8n + 8 = -4 + 7n - 3n
Click here to see answer by farohw(175)

Question 989780: The displacement (in feet) of a particle moving in a straight line is given by s=1/2t^2-6t+23,
a)Find the average velocity over each time interval a) [4,8], b) [6,8], c) [8,10] d) [8,12]
b)Find the instantaneous velocity when t=8
c) Draw the graph of s as a function of t and draw the secant lines whose slopes are the average velocities in part a). Then draw the tangent line whose slope is the instantaneous velocity in part b).
Click here to see answer by Alan3354(69443)

Question 990009: If you recieved a ckeck for 25$ and it said it was based on 150% of your investment can you determine the amount of the investmment, and what would
The investment be?
Click here to see answer by stanbon(75887)

Question 990064: Mary owns a carpet cleaning business. She charges $67.95 for a 2 bedroom house and $82.25 for a three bedroom house. Last month the company had a gross income of $4,413.00 for cleaning carpet in 8 more three bedroom houses than two bedroom houses. How many of each type did the company clean?
Click here to see answer by ikleyn(52781)

Question 990101: AB the hypothenuse of a right-angled triangle.
A is the point (3, 1) and B is the point (7, 9). Find the length of AB
Click here to see answer by Timnewman(323)

Question 990178: what is the simplified form of the rational expression below? 3x^2-48/2 x^2+8x
Click here to see answer by macston(5194)

Question 990139: Sophie Germain took her life savings ($150) to a tax-free clearance sale at Media Warehouse where she wanted to buy some Blu-Rays and some CDs. She could buy 4 Blu-Rays and 8 CDs and have $6.40 left or she could buy 6 Blu-Rays and 4 CDs and have $3.00 left.
At this sale, all Blu-Rays are the same price and all CDs are the same price.
Find the sale price of one Blu-Ray and the sale price of one CD. Type your answer with two decimals.
Click here to see answer by macston(5194)

Question 990242: Find the value of x that minimises
y = 16x^2 + 1800/x
for positive x.
So first I need to differentiate, which would give y' = 32x - 1800/x^2
I am stuck with the next 4 parts..
How many critical numbers does y have, for positive x?
Recall that a critical number of a function is a value of x for which the derivative of the function is zero or doesn't exist.
What is the nature of the critical number of the previous part?
Enter m for minimum, M for maximum or i for a horizontal point of inflection.
Give the exact value of the x that minimises y for positive x.
x (at minimum) =
Now give the value approximately as a 2 decimal place decimal. Now, give the approximate value (as a 2 decimal place decimal) of the x that minimises y for positive x.
x (at minimum) ≈

THANK YOU
Click here to see answer by josgarithmetic(39617)

Question 990246: Please check my work
Lim x-> 4/7{-} |4-7t|/(14t^2-8t)
=lim x-> 4/7{-} 4-7t/(-2t(-7+4))
=lim x-> 4/7{-} -2t
=lim x-> 4/7{-} -2(4/7)
So, I thought the answer was -8/7/ This is wrong. Please explain how to solve
Thank you
Click here to see answer by macston(5194)

Question 990312: Another problem: Determine the domain and range of
Click here to see answer by ikleyn(52781)

Question 990321: can you suck my weenier
Learn how to spell wiener
Then pull your head out of your ass

Click here to see answer by josmiceli(19441)

Question 990321: can you suck my weenier
Learn how to spell wiener
Then pull your head out of your ass

Click here to see answer by Alan3354(69443)

Question 990309: Please help me with this problem too: Find the number of radians through which a wheel rotates every 5 seconds if it revolves 20 times every minute.
Click here to see answer by josmiceli(19441)

Question 990307: Please help me with this problem: Two boats leave the buoy at the same time. One of the boats travels north at a rate of N miles per hour, and the other boat travels east at a rate of 4N miles per hour. What is the distance between the boats 30 minutes after both boats leave the buoy?
Click here to see answer by ankor@dixie-net.com(22740)

Question 990476: What is the product of the fractions below?
.
Click here to see answer by ikleyn(52781)

Question 990492: if a number is added to two third's of itself the result is 45 what is the number

Click here to see answer by Cromlix(4381)

Question 990407: Can someone explain what is going on with this problem, I am getting confused.
The problem is set up like y = x^24 Find dy/dx then a long line with x=-t at the end of dx.
Please give details.
Thank you
Click here to see answer by Fombitz(32388)

Question 990685: For these problems, x will represent the number of items and y will represent the money.
The fixed costs for a certain item are $100 per week. The cost to produce each item is $3 per item.
Using this information, what is the cost equation? Give your answer in slope-intercept form:
y=
3X+100
Preview
The retailer intends to sell each item for $10/item.
Using this information, what is the revenue equation? Give your answer in slope-intercept form:
y=
10X
Preview
If in this week 9 items are made, and all items are sold in the week, what are the total costs to the retailer?
Cost = $
127

What is the revenue from selling 9 items?
Revenue = $
90

Finally, what is the profit for this retailer? (This is the part i can't figure out)
Profit = $ <---- ?
217.00 (Wrong) Why? How?

Click here to see answer by stanbon(75887)

Question 990706: Show that the function f(x) = x^(�5) + cos(2x) is even, odd, or neither.
Click here to see answer by ikleyn(52781)

Question 990707: Determine the equation of a line, in slope-intercept form, that passes through the points (9, �2) and (12, 0).
Click here to see answer by MathLover1(20849)

Question 990768: Which of the following is the quotient of the rational expression shown below?
x/3x-1/x-2/2x

Click here to see answer by solver91311(24713)

Question 990773: In a group of 40 people the ratio of men to women is 3:1.how many women must join the group so that the ratio of men to women becomes 5:4?

Click here to see answer by josgarithmetic(39617)

Question 990781: Butter is sold at Rs22.50 per packet of 250 grams.it is bought in 8 kg - tins costing Rs645 per tin. How many packets must be sold to make a profit of Rs 900.
Click here to see answer by josmiceli(19441)

Question 990820: How long it would take for revenues to attain the level of 25,000 per day. given the equation: y = 28e^-6e^-0.5(t)?
Click here to see answer by Alan3354(69443)

Question 990896: You invested $7000 in two accounts paying 6% and 7% annual interest, respectively. If the total interest earned for the year was $471, how much was invested at each rate?
(Part 1: Let x denote the amount of money invested at 6%. Find an expression in terms of x for the amount invested at 7%.)????????????

Click here to see answer by rothauserc(4718)

Question 991045: in 1998, winchells house of donuts in Pasadena, California, created the worlds largest doughnut. it weighed 2.5 tons and had a circumference of about 298.5 feet. what was its diameter?

Click here to see answer by Cromlix(4381)

Question 991053: how would you set up this sentence into a equation?
negative 117 is nine times a number. what is the number?
Click here to see answer by ikleyn(52781)

Question 991088: The product of a number and five less than a number is
Click here to see answer by Fombitz(32388)

Question 991128: The trustees of 375000 fund that provides scholarship monies need to generate 26000 worth of income each year. Their advisors recommend investing in two different financial instruments, one very safe at 5% annually and another yielding 12% annually but more risky . How much should be allocated in each investment
Click here to see answer by solver91311(24713)

Question 991212: The radar for a county airport control tower is located at (5,10) on the map. It can detect a plane up to 20 miles away. Write an equation for outside limits that a plane can be detected.
Click here to see answer by stanbon(75887)

Question 991210: The equation for a circle is x^2+y^2=25 . A triangle is formed inside the circle by the y-axis and the equations y=-1/2x+5 and y=2x-5. Find the coordinates of the vertices of the triangle.
Click here to see answer by solver91311(24713)

Question 991209: The cross section of a flashlight is a parabola. The bulb is located at the focus. Suppose the bulb is located 1/4 in from the vertex of the reflector. The width of the cross section through the bulb is 2 inches. What is an equation for this parabola?
Click here to see answer by solver91311(24713)

Question 991211: The cross section of a flashlight is a parabola. The bulb is located at the focus. Suppose the bulb is located 1/4 in from the vertex of the reflector. The width of the cross section through the bulb is 2 inches. What is an equation for this parabola?
Click here to see answer by solver91311(24713)

Question 991172: Q: Let f(x) =
Find f ' (x) first set up the limits & simplify
My soltn:
lim x->c
lim x->c
I got the solution 7/(x+2)(c+2) but my program keeps saying this is incorrect.
Please help!
Click here to see answer by rothauserc(4718)

Question 991228: The cross section of a flashlight is a parabola. The bulb is at the focus. Suppose the bulb is located 1/4 in from the vertex of the reflector. The width of the cross section through the bulb is 2 in. What is an equation for this parabola?
Click here to see answer by josgarithmetic(39617)

Question 990782: Which of the following is the quotient of the rational expressions shown below?
Make sure your answer is in reduced form.
3x-6/x3 / x-2/2x-1
Click here to see answer by Fombitz(32388)

Question 991591: Suppose that the quantity supplied S and quantity demanded D of T-shirts at a concert are given by:s(p)=5p-200 and d(p)=1000-25p where p is the price.
a. Find the equilibrium price for T-shirts in this concert.

b. Find the equilibrium quantity for T-shirts in this concert.

Click here to see answer by Theo(13342)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560