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

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Question 607440: f(x)-2+e^x
a)find the inverse function f^-1(x)
b)fine the domain and range of f^-1(x)
Click here to see answer by stanbon(57278)

Question 607613: how do i solve 5r-s=5 and -4r+5s=17 get back to me asap plz

Click here to see answer by scott8148(6628)

Question 607665: what is the domain of the function g(x)=6/5-9x
Click here to see answer by jim_thompson5910(28536)

Question 607842: A rock falls from a tower that is 480 feet high. As it is falling, its height is given by the formula h(t)=480-16t^2. How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
Click here to see answer by ewatrrr(10682)

Question 607834: Find and simplify the difference quotient of f, f(x+h)-f(x)/h, h not= 0, for the function.
Click here to see answer by lynnlo(4155)

Question 607831: Find the inverse function of f. State the domain and range of f.
f(x)=3x-2/xt5
Click here to see answer by lynnlo(4155)

Question 607990: if f(x) = 3x-4 and g(x)= square root of x^2 - 9. Find fog(5). ??

Click here to see answer by ewatrrr(10682)

Question 608154: Given the function f(x) = 9x - 9
a. Find the rate of change between the two stated values for x: 8 to 9.
b. Find the equation of a secant line containing the given points: (8,f(8)) and (9,f(9)) I could use the answer as soon as you can.
Click here to see answer by richard1234(5390)

Question 608425: The question says: Let f(x)=x^(2)+5 and g(x)=x-7 . Perform these function operations: f(x)=g(x), f(x)multiplied by g(x), f (g(2) ), and g( f(x)). I would appreciate much help on these several problems.
Click here to see answer by nerdybill(6951)

Question 608589: 21. Without graphing, tell whether the line containing (–7, 5) and (–7, –9) is horizontal, vertical, or neither.
Click here to see answer by rfer(12654)

Question 608986: Find domain of f (x) = 2x-7, my question is how do you know the answer is all real #s?
Click here to see answer by flame8855(424)

Question 609168: Given the function k described by k(x)=x+2, find each of the following. K(0)=___
Click here to see answer by ewatrrr(10682)

Question 609174: Given the function f described by f(x)=12x, find each of the following.
(a) f(-6)
(b) f(6)
(c) f(21)
f(-6)=___?
Click here to see answer by solver91311(16872)

Question 609174: Given the function f described by f(x)=12x, find each of the following.
(a) f(-6)
(b) f(6)
(c) f(21)
f(-6)=___?
Click here to see answer by ewatrrr(10682)

Question 609176: Find the indicated outputs for f(x)=3x^2-5x.
f(0)=?
Click here to see answer by solver91311(16872)

Question 609163: The function H described by H(x)=2.75x+71.48 can be used to predict the height, in centimeters of a woman whos humerus (the bone from the elbow to the shoulder) is x cm long. Predict the height of a woman whos humerus is 36cm long is ___cm.
Click here to see answer by solver91311(16872)

Question 609474: (x^2 – 16)/(x+4)
To find the following quotient, can I do this?
(x+4)(x-4)/(x+4)
= x-4
Yes or No?

Click here to see answer by lynnlo(4155)

Question 609677: Y varies directly as x and inversely as the square of z. y=10 when x=80 and z =4. Find y when x=44 and z=2
Click here to see answer by stanbon(57278)

Question 609962: Find the equation for a line which passes through the points (-3,9) and (1,1). Write the equation in slope-intercept form. Please show work.

Click here to see answer by jim_thompson5910(28536)

Question 609920: Marry is x years old. How old will she be in 10 years. How old was she 3 years ago.

Click here to see answer by mayowa(1)

Question 610542: What is the domain of x for f(x)=6+√x-1 if f(x) is to be a real number
Click here to see answer by stanbon(57278)

Question 610642: Listed below are 5 functions each denoted g(x) and each involving a real number
x
constant c>1. If f(x)=2 , which of these 5 functions yeilds the greatest value for f(g(x)), for all x>1?
A. g(x)= cx
B. g(x)= c/x
C. g(x)= x/c
D. g(x)= x-c
E. g(x)= log x
I dont understand this
Click here to see answer by jim_thompson5910(28536)

Question 610896: Find the solution set for y=2x+1, given the replacement se {(-2,-3)(-1,-1)(0,2)(1,3)(2,6)}
Click here to see answer by solver91311(16872)

Question 610980: I need to understand how to solve these two problems. would you please show the steps?
5 times square root 3 - 4 times square root 80

-3 square root 108
Click here to see answer by ewatrrr(10682)

Question 611145: does the point (5,5) satisfy the equation y=x
and also is there a calcutor for this type of problem
Click here to see answer by Alan3354(30993)

Question 611296: If f(x)=x+8
g(x)=x-10
h(x)=5x
How will i solve f(3)
Click here to see answer by jim_thompson5910(28536)

Question 611318: Consider the function G(x)=13 . Then g(-2)+g(-10) _____.

Click here to see answer by ewatrrr(10682)

Question 611360: Given the graph of y=f(x) describe in words the transformation of y=f(x)-4.
Click here to see answer by solver91311(16872)

Question 611466: f(x)=2x^2-√(-9x). what is f(-4)
Click here to see answer by stanbon(57278)

Question 612203: If the the function is C(g)= 3.03 (g)
What is C(2)?
What is C(a)?
How do you solve this?
Click here to see answer by bucky(2189)

Question 612160: Media services charges $30 for a phone and $20/month for its economy plan. Find a model that determines the total cost c(t), of operating a media service phone for t months.
Click here to see answer by Bb(19)

Question 612437: How would you graph this problem y=3(2)x
Click here to see answer by ewatrrr(10682)

Question 612458: Find the slope, if it exists, of the line containing the oair of points (1,3) and (10,-10)
Click here to see answer by blwinbbbles(106)

Question 612459: Write an equation of the line containing the given point and parallel to the line. Express your answer in the form y=mx+b.
(7,8);x+2y=3.
Click here to see answer by ewatrrr(10682)

Question 612454: Find the equation of the line containing the given pair of points (-1,-9) and (-5,-4)
Click here to see answer by jim_thompson5910(28536)

Question 612457: Determine whether the graphs of the two equations are perpendicular.
y=3x-9
7y=9-x
Click here to see answer by ewatrrr(10682)

Question 612531: What is the excluded value?
3x/1-3x
Click here to see answer by jim_thompson5910(28536)

Question 612578: Determine whether the graphs of the two lines are parallel.
y+6=5x
3x-y=-6
Are the graphs of the given equations parallel?
Click here to see answer by solver91311(16872)

Question 612638: The function w(d)=0.112d approximates the amount, in centimeters, of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 11cm, 25cm, and 94cm.
11cm of snow melting produces ____cm of water.
25cm of snow melting produces ____cm of water.
94cm of snow melting produces ____cm of water.
Click here to see answer by stanbon(57278)

Question 612635: Find an equatiin of the line having the given slope and containing the given point. M= -3,(5,9)
y=_____.
Click here to see answer by stanbon(57278)

Question 612653: Question: Find the inverse of the given function - f(x) = 2x^3 - 3
This is what I've tried to do:
f(x) = 2x^3 - 3
y = 2x^3 - 3 (turned it into a linear equation)
x = 2y^3 - 3 (switched x and y)
-2y^3 = -x -3 (isolate y)
-2y = ^3√-x - 3 (cube rooted both sides to get y on its own)
y = ^3√x + 3 / 2 (divided by - 2)
Click here to see answer by Alan3354(30993)

Question 612646: Graph to find the average rate of change as a reduced fraction. Also, state the approximate units the range is______.
Select the appropriate units:
a) kilometers per minute
b) kilometer
c) minutes per kilometer
d) minutes
e) none of the above
Click here to see answer by richwmiller(9135)

Question 612912: How many boxes are there in a pyramid that has a base of 100 boxes? And why?
Click here to see answer by jim_thompson5910(28536)

Question 613107: Find the shifted function and then display the given function and the shifted function on a graphing calculator
Click here to see answer by stanbon(57278)

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