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21 November, 18:40

If f (x) = 5x + 40, what is f (x) when x = - 5?

a.-9

b.-8

c. 7

d. 15

+2
Answers (2)
  1. 21 November, 20:09
    0
    f (x) = 15 d.

    Step-by-step explanation:

    To begin solving the equation you need to substitute - 5 in for x.

    The equation would then read f (x) = 5 (-5) + 40

    Then you need to simplify 5 times - 5 is - 25

    the equation would be f (x) = -25+40

    Then you would simplify and you will get f (x) = 15
  2. 21 November, 20:38
    0
    Just plug the number

    _5 (5) + 40=-25+40

    =15
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