How to find f(x)

Practice Questions

ACT Math › How to find f(x)

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1

An outpost has the supplies to last 2 people for 14 days. How many days will the supplies last for 7 people?

2

When written in symbols, “The square of the sum of and equals ” is represented as:

3

A book binding company charges a fixed fee of $2.25 to bind a book and an additional $0.15 per page. Which equation accurately calculates the cost, C, of a book with p number of pages?

4

Find

$f(x)=|x^{2}+4x-127|$

5

If and , then

6

If , what does equal?

7

If , what is ?

8

Given the functions and , what is when ?

9

For which value of are the following two functions equal?

$F(x)=2x+3^x+\frac{9x}{3}$

$G(x)=\frac{2^x+4^x}{2}-4x-5x+1$

10

If the average of two numbers is $\dpi{100} \small 3y$ and one of the numbers is $\dpi{100} \small y+z$ , what is the other number, in terms of $\dpi{100} \small y$ and $\dpi{100} \small z$ ?

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