Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 142615: Pls help me.
The annual growth rate for an investment that is growing continuously is given by
r = 1/tIn(A/P)

where P is the principle and A is the amount after t years.

An investment of $9000 with a certain computer company in 1995 grew to $250000 in 1998. Assuming the investment grew continuously, what was the annual growth rate?

(Please round your answer to three decimal places.)

Click here to see answer by stanbon(75887)

Question 142689: what is the domain and range of this equation: x=-1
Click here to see answer by stanbon(75887)

Question 142740: What is the domain and range of this equation: y=1(x-3)^2+6
Click here to see answer by scott8148(6628)

Question 142809: I don't know how to do this problem can someone help me?
Write a rule that expresses the months m(y) as a function of the number of years y.

Thanks!
Click here to see answer by scott8148(6628)

Question 142832: Find the slope and y intercept of the graph
5x-4y= -20
Click here to see answer by nabla(475)

Question 142810: Is selling price for a specific item a function of markup? Explain.

This question is confusing can someone help me?
Click here to see answer by stanbon(75887)

Question 142831: Sketch the following function
f(x)= -x squared + 4 and
label
max or min points with appropriate coordinates
y intercept
x intercept if any
describe mathematically how the graph transformed from f(x) = x squared
Click here to see answer by Fruglemiester1234(13)

Question 142996: Evaluate the function when x=4, x=0, and x=-3.
1.) f(x) = 1.5x - 0.4
2.) h(x) = 3/8x + 2/3
3.) g(x) = -14x + 5
4.) k(x) = 3.2 - 5x
Click here to see answer by checkley77(12844)

Question 142996: Evaluate the function when x=4, x=0, and x=-3.
1.) f(x) = 1.5x - 0.4
2.) h(x) = 3/8x + 2/3
3.) g(x) = -14x + 5
4.) k(x) = 3.2 - 5x
Click here to see answer by BrittanyM(80)

Question 143030: Please help me answer the followig question. They are asking for the domain of the following: l(x)=2x+3 There are others like it, but if you can help me solve this one in steps, Im sure I can figure the rest out on my own.
Thank you in advance for your help.
Jennifer

Click here to see answer by jim_thompson5910(35256)

Question 143078: 4x=5y+20
Click here to see answer by nabla(475)

Question 143347: Can someone please help me understand this problem?
Given the constraints x + y(<=)90, 3x - y(>=)0, x(>=)0, y(>=)0, the minimum value for the function f(x) = 10x + 11y is
a. -90
b. 0
c. -3
d. 990
Thank you
Click here to see answer by edjones(8007)

Question 143555: find domain and range
f(x)=2-square root xsquared+3x+2divided by x squared+5x+4
Click here to see answer by stanbon(75887)

Question 143553: Find the domain and Range
f (x)=square root x-3 divided by 6-3x
Click here to see answer by nabla(475)

Question 143601: Tutor can you help me please???This is from my textbook (Penner and Better)For the one to one functon f(x)= 2/3-x
Find the inverse f^-1; find the domain and range of f; Find the domain and range of f^-1
Click here to see answer by nabla(475)

Question 143745: Please help me solve these problems
Find the domain:
3/x^2+5
3x^2+5x-3
Click here to see answer by vleith(2983)

Question 143766: Describe the transformation of y=f(x) that will occur in order to obtain the graphe of y=-f(x+2)+1
Click here to see answer by rapaljer(4671)

Question 143763: If f is a decreasing function and f(5)=7, is f(0) less than, equal to or greater than 7? Explain your answer.
Click here to see answer by rapaljer(4671)

Question 143762: If f is a decreasing function and f(5)=7, is f(0) less than, equal to or greater than 7? Explain your answer.
Click here to see answer by rapaljer(4671)

Question 143824: Hi how is everyone today? Hope someone can help me this problem.
Science and medicine. Martina leaves home at 9 A.M., bicycling at a rate of
20 mi/h. Two hours later, John leaves, driving at the rate of 40 mi/h. At what time will John catch up with Martina? Show your work.

Click here to see answer by checkley77(12844)

Question 143909: What is the solution for f(x)=-4 when x=2.5?
Click here to see answer by stanbon(75887)

Question 143907: Tutors...HELP...Thank you
find an equation of the inverse relation y=3x^2-5x+9
and
x=1/2y+4
Click here to see answer by jim_thompson5910(35256)

Question 144003: 2log1 is it 0 1 2 or 3
log(2+3) is it log 2+log3, log5, 2log3, or 3log2
log ABexponent2 is it 2logAlogB, log5, 2log3, or 3log2
log ABexponent2 is it 2logAlogB, logA+logB+log2, 2logA+logB, or logA+2logB
skipped #4
What are the characteristics of th logarithms of the numbers in question 5 to 8
5. 1.00 is it 1,2,3,0
6. 2520 is it 3,4,7-10,6-10
7. 2.7 is it 2,1,0,9-10
8. 0.0045 is it 4,6-10,0,7-10,8-10

Click here to see answer by jim_thompson5910(35256)

Question 144124: Determine the domain of the function f(x)=2x/x-1
Click here to see answer by solver91311(24713)

Question 144186: if f is a linear function and f(0)=10 and f(10)=14, find f(5) and f(-5).
Click here to see answer by stanbon(75887)

Question 144324: Suppose you are at the gas station filling up your tank with gas. The function
C(g) represents the cost of gas and g the gallons C(g)=3.03(g)
If you were to graph C(g) what would be an appropraite domain? Range?
Click here to see answer by vleith(2983)

Question 144396: Show that the function f(x)=x/x-4 is a one to one function
Find the inverse of the function
Thank you tutors
Click here to see answer by jim_thompson5910(35256)

Question 144650: If (3, 2) is an ordered pair of the function F(x), which of the following must be an ordered pair of the inverse of F(x)?
A. (3, 2)
B. (2, 2)
C. (2, 3)
D. (3, 3)
I THINK IT MIGHT BE 2,3 BUT IM NOT 100% SURE
Click here to see answer by stanbon(75887)

Question 144651: Complete the inverse of F(x) below. Enter exponents using the caret (^); for example, enter x2 as x^2. Do not include "F-1(y) =" in your answer.
F(x) = x - 4
F-1(y) = _____

can some one explan to me how to do it step by step for further refrence
Click here to see answer by nabla(475)

Question 144760: Given the function G(X)=square root sign with X + 6 under the square root (It like a check with a long line and x + 6 under it) I need to Identify the Domain and the range Thanks for your help
Click here to see answer by stanbon(75887)

Question 144839: Find the domain of the function.
p(x)=x^3-x^2+x-9
What is the function of p?
a. {x x is a real number}
b. {x x is not equal to 0}
c. {x x is not equal to 9}
d. {x x>0}
Click here to see answer by jim_thompson5910(35256)

Question 144971: Over the set of real numbers, what is the domain of the composite function G(F(x))?
F(x) = 3 - x, G(y) = √y
G(F(x)) = √3-x
possible awnsers are:
A. x > 3
B. x 3
C. x 3
D. All real numbers

Click here to see answer by solver91311(24713)

Question 144972: What is the domain of the composite function G(F(x))?
F(x) = x - 2, G(y) = 1/y
G(F(x)) = 1/x-2

the possible options are
A. x > 2
B. x 2
C. All real numbers
D. All real numbers except 2

Click here to see answer by vleith(2983)

Question 144986: Which of these equations represent functions? Check all that apply.
A. y^2 = x^2
B. y = 3x
C. y = x^2
D. x^2 - y^2 = 1

Click here to see answer by stanbon(75887)

Question 144975: What is the domain of the composite function G(F(x))?
fx=√x
G(F(x))=1/√x-4
G(y)=1/y-4
the possible awnsers are
A. x < 0
B. x ≤ 4
C. x ≥ 0
D. x > 0
E. x < 4
F. All real numbers

Click here to see answer by stanbon(75887)

Question 144988: Which of these equations represent functions? Check all that apply.
A. y = (x - 2)^2 + 5
B. x^2 - 4y^2 = 1
C. y = 3x - 3
D. y = 4x^5

Click here to see answer by jim_thompson5910(35256)

Question 144988: Which of these equations represent functions? Check all that apply.
A. y = (x - 2)^2 + 5
B. x^2 - 4y^2 = 1
C. y = 3x - 3
D. y = 4x^5

Click here to see answer by stanbon(75887)

Question 144999: Determine the domain of f in f(x)=10- the square root of 3-x
Click here to see answer by shahid(44)

Question 145000: PLEASE HELP
If the graph of f contains the points ( -1, 3), ( 0, 4) and ( 2, -7) list the points that would be found on the graphs of each of the following functions:
a) f (x – 3)
b) f (x) + 3
Thank You

Click here to see answer by stanbon(75887)

Question 145020: PLEASEEE
1. Find functions f and g so that f [g(x)] = H(x) where H(x)=(1+x^2)^3
2. If g(x)=x^2+4x+2 find g(2) and g(x+2)
3. For f(x)=4x+1 and g(x)=x^2-2x-4 find (g-f)(x). Simplify the answer.
4.What is the function which would intersect the y-axis 2 positions up(vertical) from the function f(x)=x^2
5. Using the graphing utility to approximate any relative minimum or maximum points of f(x)=x^2-6x.
THANK YOU VERY MUCH
Click here to see answer by stanbon(75887)

Question 145283: (4,10)(2,8)(4,-7)
Click here to see answer by Alan3354(69443)

Question 145442: find a formula for the inverse of the function if it exists
f(x)=x/x-1
Thank you tutors
Click here to see answer by stanbon(75887)

Question 145434: How would I find the domain and range of C(g) if C= 3.03
I'm confused about how to cube a number and find the domain and range between the first and second set of coordinates. I have tried to use the y= mx+b but I just don't get it.
Click here to see answer by stanbon(75887)

Question 145432: Find the domain and write in interval notation
f(x)= 2x+1/3x+5
it looks like a fraction: f(x)= 2x+1 "over" 3x+5
I have an answer sheet but it doesn't help because I don't understand how to work the problem to find the answer...any help would be greatly appreciated!

Click here to see answer by stanbon(75887)

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