Question

the function f(x) = 3x + 9 represents the cost to rent movies from an online program. Jonah has $21. How much more money does he need if he wants to rent 5 movies next month? (do not type dollar sign)

Answer 1

Answer:

3 dollars

Step-by-step explanation:

substitute 5 in for x:

3(5)+9=24

it costs 24 dollars to pay for 5 movies.  jonah has 21 dollars so he would need an extra 3 dollars to rent 5 movies.

hope this helps :)