Question

Evaluate the function

Answer 1

It should be -101. Just plug in 9 into x so it would be like f(9)= 9^2-20. Which equals -101

Answer 2

-101

Explanation:

Put 9 where x is, and do the arithmetic.

f(x) = -x² -20

f(9) = -9² -20 = -81 -20

f(9) = -101