Question

If f(x)= 6x+7, determine the value of f(-5)

Answer 1

X = -5
so f(-5) = 6(-5)+7
f(-5) = -30 +7
f(-5)= -23

Answer 2

You would substitute or plug in -5 wherever there is an x in the equation.

f(-5) = 6(-5) + 7
f(-5)= -30 + 7
f(-5) = -23