Question

If f(x) = x² + 1 and g(x) = 3x + 1, find f(-1) + 5g(-3).

Answer 1

well f(-1) is

\[f(-1) = (-1)^2 + 1\]

and 5g(-3) is

\[5g(-3) = 5 \times (3 \times(-3) + 1)\]

so f(-1) + 5g(-3) is

\[(-1)^2 + 1 + 5\times(3 \times (-3) + 1)\]

just evaluate it

Answer 2

-38?

Answer 3

seems correct to me