Question

7. If f(x) = -x + 7, what is f(15)?Of(15) = 22f(15) = -22Of(15) = -8f(15) = 8

Answer 1

the fuction f(x) is equal to:

$f(x)=-x+7$

now, to evaluate f(15) we have to replace x=15 so the equation is going to be equal to:

$f(15)=-15+7=-8$