Questions on Algebra in Finance answered by real tutors!

Tutors Answer Your Questions about Finance (FREE)

Question 1119631: A barrel of oil is extracted from shale at a cost of $51, and then transported to and from
the refinery at a cost of $6 each direction. Oil is processed 3 times at the refinery plant,
at a cost of $9, each time. What is the profit, in dollars per barrel, if one barrel is sold for $93?
Click here to see answer by josgarithmetic(39617)

Question 1119651: Identify the type of the statement: ~(p v r) v q.
Find the truth value of the statement ~(p v r) v q if p is true, q is true, and ~r is true.

Click here to see answer by solver91311(24713)

Question 1119730: Which function is defined by f(x)=b^x, where b>0,b≠ 1, and the exponent x is any real number
A. Square root Function
B. Exponental Function
C. Quadratic Function
D. Linear Function
Click here to see answer by josgarithmetic(39617)

Question 1119726: What are the domain and range of the parabola of this equation?
Y=-x^2-x+8
A.The domain is the set of real numbers, and the range is all real numbers�less than or equal to 8.25.
B.The domain is the set of real numbers, and the range is all real numbers�less than or equal to 8.
C.The domain is all real numbers�less than or equal to 8.25, and the range is the set of real numbers.
D.The domain is all real numbers�less�than or equal to 8, and the range is the set of real numbers.

Click here to see answer by josgarithmetic(39617)

Question 1119733: What are the domain and range of the function below?
D(x) = { x^2-2x-3 if x<4
3x-7 if x≥4
A.Domain[-4,∞)
Range All real numbers
B.Domain (-∞,4)
Range (4,∞)
C.Domain All real numbers
Range [-4,∞)
D.Domain All real numbers
Range All real numbers

Click here to see answer by Boreal(15235)

Question 1119781: transpose the equation A = PQRS - 48DZ for D
Click here to see answer by solver91311(24713)

Question 1119800: Which of the following is the general symbolic form of a square root function?

A.f(x)= x√a+b
B.f(x)= x+√a�
C.f(x)= x√a+b
D.f(x)= √x-a+B
----------------
Which of the following is the general symbolic form of a rational function

A.f(x)=√ax+b
B.f(x)=(1)/(x-b)+c
C.f(x)=mx+b
D.f(x)=1+(x)/(b-a)
----------------

Click here to see answer by greenestamps(13200)

Question 1119811: suppose certain coins weights that are normally distributed with a mean of 5.285 g and a standard deviation of 0.066g. A vending machine is configured to accept those coins with weights between 5.175g and 5.395 g.
a. If 250 different coins are inserted into the vending machine, what is the expected number of rejected coins?
Click here to see answer by Boreal(15235)

Question 1119824:
Click here to see answer by josgarithmetic(39617)

Question 1119824:
Click here to see answer by Shin123(626)

Question 1119725: Using the least-squares method, what�is the equation of the line of best fit for the data below?

Data Points
(2,3) (1,0)
(1,2) (4,2)
A. y= 7/4

B. y= 11/12

C. y= (1/3x) + (13/12)
D. y= (1/4x) + (5/6)
Click here to see answer by math_helper(2461)

Question 1119831: Dear Teacher,
I am so sorry to bother, but I really need some help with my assignment. This is the question:
Jenny has a younger sister Rose. Five years ago, Jenny was 10 times as old as Rose. Three years from now, Jenny will be twice as old as Rose.
a) What are Jenny and Rose's present age?
b) How old was Jenny when Rose was born?
Thank you so much!

Click here to see answer by ankor@dixie-net.com(22740)

Question 1119857: Need confirmation please.
Need to find the slope-intercept form of the line through: (2, -5), perpendicular to y = 2/7x - 1
What I did was:
y=-7/2 (flipped and made negative) x +b
-5=-7/2(2/1)+b
-5=-14/2+b
-5=-7+b
-5+7=-7+b+7
2=b
Then writing it in slope intercept:
y=-7/2x+2
Thank you

Click here to see answer by ikleyn(52787)

Question 1119862: Need another question validated please.
Bill and Mary are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of holiday wrapping paper. Bill sold 4 rolls of plain wrapping paper and 2 rolls of holiday wrapping paper for a total of $86. Mary sold 12 rolls of plain wrapping paper and 5 rolls of holiday wrapping paper for a total of $243. What is the cost each
of one roll of plain wrapping paper and one roll of holiday wrapping paper?
What I did to solve:
Let x= represent price of plain wrapping paper
Let y= represent price of holiday wrapping paper
4x + 2y = 86
12x + 5y = 243
3(4x + 2y) = 3(86)
-1(12x + 5y) = -1(243)
12x + 6y = 258
-12x - 5y = 243
---------------
1y = 15
4x + 2(15) = 86
4x + 30 = 86
4x + 30 - 30 = 86 - 30
4x = 56
4x = 56
-- --
4 4
x = 14
The part that is throwing me of is 1y = 15. It doesn't seem right.
Thanks for your time.

Click here to see answer by Theo(13342)

Question 1119882: Need help please.
I'm trying to figure out how to find three ordered pairs that satisfy the equation 4 + 2y = 3x.
I've been staring at this for a while, read, and researched, but cannot figure it out.
More than anything, I would like to understand how to get the intercepts, not just an answer.
Thank you!

Click here to see answer by math_helper(2461)

Question 1119738: Mary's Towel Company recorded the following data on the number of towels sold (x) and the company's total profit (y).�
Number of towels sold 2 , 3 , 4 , 5 , 6 , 7 , 8
Total profit. $7 , $16 , $27, $40 , $55 , $72 , $91

If the company creates a scatter plot of the data, what will be the equation of the curve of best fit?
A.f(x)= x^2+4x-5
B.f(x)= x^2+5x-4
C.f(x)= 2x^2-4x-5
D.f(x)= 2x^2-5x-4

Click here to see answer by rapture1965(18)

Question 1119945: Shahab has an opportunity to invest in a fund which earns 6% profit compounded annually. How much should he invest now if he wants to receive Rs.6, 000(including principal) from the fund, at the end of each year for the next 10 years? How much interest he would earn over the period of 10 year?
Click here to see answer by Theo(13342)

Question 1119946: Younus Limited (YL) has borrowed an amount of Rs. 100,000 at an interest of 10% per annum compounded semi-annually. To pay off the loan at the end of four years, YL has created a sinking fund, which yields a return of 8% per annum compounded quarterly. Determine the amount which YL must deposit at the end of each quarter, in the sinking fund, to settle the loan at the end of four years?
Click here to see answer by Theo(13342)

Question 1120035: if A=P+(1/100)PRT then what would T=?

Click here to see answer by josgarithmetic(39617)

Question 1120044: If s=1/2d(a+l) what would a equal to if it were the subject of the equation
Click here to see answer by josgarithmetic(39617)

Question 1120036: if s=1/2d(a+l) then what would a=?

Click here to see answer by josgarithmetic(39617)

Question 1120036: if s=1/2d(a+l) then what would a=?

Click here to see answer by Alan3354(69443)

Question 1120037: if s=1/2n(2a+(n-1)d) then what d=?

Click here to see answer by josgarithmetic(39617)

Question 1120165: Eliana wants to make a diorama for an art contest. She starts with a rectangular sheet of cardboard that is 12 in. long and 8in. wide. She plans to make the diorama box by cutting identical squares from the corners and folding the sides to create a box with an open front.
Write a function V(x) for the volume of the diorama box as a polynomial in standarm form. Classify the polynomial by degree and by number of terms.
Click here to see answer by ikleyn(52787)

Question 1120242: factorise x^2+4y^216z^2+4xy+16yz+8zx and find the value when x=2, y=-1 and z=1
Click here to see answer by ikleyn(52787)

Question 1120242: factorise x^2+4y^216z^2+4xy+16yz+8zx and find the value when x=2, y=-1 and z=1
Click here to see answer by Shin123(626)

Question 1120236: Probability. You blindly guessed the last five multiple-choice items of
an UPCAT practice test. What is the probability that you will
answer all five questions correctly? Please help. And please explain. Thankyou.
Click here to see answer by Boreal(15235)

Question 1120289: solve this system of linear equations. separate the x- and the y-values with a comma?
6x=-58-11y
-4x=2-11y
Click here to see answer by ankor@dixie-net.com(22740)

Question 1120316: Sales of x units of a product are found to be given by the function s(x)=4x^3+2x^2-7.
At what rate are sales changing when x=5?
Click here to see answer by solver91311(24713)

Question 1120315:
a point is moving along the positive y axis at a constant rate of 6 units per second. Find the rate of change of its distance from (1,0) when y=2
Thank you
Click here to see answer by greenestamps(13200)

Question 1120278: lim x -> 0
(sqrt x + 1)^2 - 1 / x
Click here to see answer by solver91311(24713)

Question 1120372:
Your pay also includes a deduction for Medicare. The 2013 rate is 1.35% of your annual salary as $40,365. Do not use your taxable income as done in previous questions. If 1.35% of your earnings are deducted for Medicare, how much is deducted from your salary within one year? (Note: There is not a maximum contribution for Medicare.

Click here to see answer by solver91311(24713)

Question 1120408: A baseball team played 172 complete games last season. They had 20 fewer wins than losses. How many games did the team win?
A.172 games
B.76 games
C.96 games
D.20 games
Click here to see answer by ikleyn(52787)

Question 1120409: the intensity I of light varies inversely as the square of the distance D from the source if the intensity of Illumination on a screen 5 ft from a light is 3 foot_candles find the intensity on a screen 15 ft from the light.
A. 1(1/3) Foot-candles
B.1/3 Foot-Candles
c.1/4 Foot- Candles
D. 2 Foot - Candles
Click here to see answer by rothauserc(4718)

Question 1120421: Joan can mow a 8- acre field in 4 hours how long would it take her to mow a 2.8 acre field? (round to the nearest hundredth)
A.4.40 hr
B. 1.40 HR
C. 3.40 HR
D.3.00 HR
Click here to see answer by Boreal(15235)

Question 1120420: The total cost of an item in dollars, including a 6% sales tax, can be determined by the expression x + 0.06x, where x is the cost of the item before the tax. Determine the total cost of an item whose cost before tax is $390.
a. $425.80
b.$411.06
c.$413.40
d.$423.40
Click here to see answer by Boreal(15235)

Question 1120430: Find the value of the variable that is not given
P=2L+2W; P=32, W=8
A. 8
B. 16
C. 24
D. 12
Click here to see answer by ikleyn(52787)

Question 1120449: Determine the effective annual yield for $1 invested for 1 year at 10.5% compounded quarterly
a. 0.92%
b. 10.92%
c.5.32%
d. 20.92%
Click here to see answer by greenestamps(13200)

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