Question

If d (x) = 2 x + 1, find d(-3) =

Answer 1

d(-3) = -5

Explanation:

To find the answer substitute x for -3

This means the equation will now look like

d(-3) = 2(-3) + 1

d(-3) = -6 + 1

d(-3) = -5

Answer 2

d(-3) = -5

Explanation:

To find d(-3), plug in -3 wherever there is an x in d(x).

d(x) = 2x + 1

d(-3) = 2(-3) + 1

d(-3) = -6 + 1

d(-3) = -5