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

User Randomstatistic
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1 Answer

3 votes

use the substitution method

f(x)= 5x+40

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

f(-5)= -25+40

f(-5)= 15

Answer is f(-5)= 15

User Ciaranc
by
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