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

1 answer:

5 0

First note that f(x) means the same thing as y. To solve for f(x) or y you need to plug in -5 for x and solve using the rules of PEMDAS

5(-5) + 40

-25 + 40

When x is -5 then y is 15

Hope this helped!

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