Question

If f(x) = 5x + 40, what is f(x) when x = -5?
A. -9
B. -8
C. 7
D. -5

(please help)​

Answer 1

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

So first thing we'll have to plug in what we know...

$-5=5x+40$

Then we should start by subtracting 40 on both sides...

$-45=5x$

Then after that we will simple just have to divide 5 on both sides to get the answer of...

$f(x)=-9$

So it's choice A. -9