Question

F(x)=5x+3 find f(-2)

Answer 1

In order to find f(-2) when f(x)=5x+3, you the first thing you must do is to set up your equation which should look like this:
f(-2)=5(-2)+3

When f(-2), it is stating in mathematical terms that the x value is -2, therefore you would substitute the x value with -2. When you simplify the expression, you should get -10+3 which results in your answer, -7.

Answer 2

F(x) = 5x + 3
f(-2) = 5(-2) + 3
f(-2) = -10 + 3
f(-2) = -7

f(-2) = -7 is your answer

hope this helps