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3 years ago

If f(x) = 5x + 40, what is f(x) when x = -5? -9 -8 715

Mathematics

2 answers:

Luden [163]3 years ago

5 0

Answer:

Step-by-step explanation:

f(x)=5x+40

f(x)=5(-5)+40

f(x)=-25+40

f(x)=15

dezoksy [38]3 years ago

5 0

Answer:

Step-by-step explanation:

A function as this f(x) = 5x + 40 means where you have x you need to insert the value of x in the equation. The value of x is -5 hence you write

f(-5) = 5(-5) + 40

Open the bracket by doing 5 x -5 which gives -25

so you have -25 + 40 which you can re-arrange as 40 - 25.

40-25 = 15

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3 years ago

If f(x) = 5x + 40, what is f(x) when x = -5? -9 -8 715​

If f(x) = 5x + 40, what is f(x) when x = -5? -9 -8 715