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kow [346]
2 years ago
14

If f(x) = 5x + 40, what is f(x) when x = –5? a.–9 b.–8 c.7 d.15

Mathematics
2 answers:
Helen [10]2 years ago
5 0

Answer:

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

defon2 years ago
3 0

Just plug the number

_5(5)+40=-25+40

=15

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