NSHS Unit 1 Test: Functions

Evaluate the function for the given value.

If f(x) = 3x + 4, find f(4).

Evaluate the function for the given value.

If g(x) = -2x - 10, find g(-3).

Evaluate the function for the given value.

Find h(2).

Find x if f(x) = -5

Find x if g(x) = -16

Use the graph to answer questions 6-9.

f(4) = _______

Use the graph to answer questions 6-9.

f(8) = _______

Use the graph to answer questions 6-9.

f(0) = _______

Use the graph to answer questions 6-9.

f(6) = _______

In which choice is y not a function of x? (Which relation is not a function?)

The function P(m) = 43 + 0.08m is used to determine the price, P(m), of your phone bill depending on the number of minutes, m, used. What is the price for using 178 minutes?

Using the function in question 11,

P(m) = 43 + 0.08m

how many minutes were used if the price of the bill is $62.68?

For the function f(x) = x² + 4x – 1, select the letter that describes the range of f(x) for the domain {-2, 0, 1}.

A. {-13, -1, 4}

B. {-5, -1, 4}

C. {-5, 0, 6}

D. {-13, 0, 2}

What is the value of g(3) for the function g(x) = 2^x -3?

The function S(w) = 9w + 45 models the amount of money Jen saves, S(w) after a given number of weeks, w. How many weeks will it take Jen to save $126?

The function P(x) = 5x – 25 models the amount of profit made from selling bags of coffee, x. How much profit will you make if you sell 12 bags of coffee?

The function f(x) = 3x + 10 models the yearly membership of an online movie rental club, where x is the number of movies rented.

In one year Rachel rented 21 movies. How much was Rachel’s membership?

The function f(x) = 3x + 10 models the yearly membership of an online movie rental club, where x is the number of movies rented.

In one year, Toby rented twice the amount of movies as Rachel. How much more did Toby pay in one year than Rachel? (Use your answer from #17)

Solve the equation 2x + 3y = 7 for y.

Solve the equation a + 3b = 12 for a.