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

If f(x) = 5x + 40, what is f(x) when x = -5?
asked 64.2k views
5 votes
If f(x) = 5x + 40, what is f(x) when x = -5?

asked
User Randomstatistic
by
7.7k points

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

answered
User Ciaranc
by
9.0k points
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