Question

Find the value of ​f(4​) for the function.
​f(x)=−3​(x+3​)

Answer 1

-21

Explanation:

`f(x) = - 3(x + 3) \\ f(x) = - 3x - 9 \\ f(4) = - 3 * 4 - 9 \\ = - 12 - 9 \\ = - 21`