Question

3. What is f(2) if f(x) = 2x³ - 19x² +28x + 47?
O 45
O 40
O 43
O 37

Answer 1

Answer: C: 43

Explanation:

As we are calling the function with 2 for x, we can substitute 2 for every x we see in the function and solve.

`f(2)=2(2)^3-19(2)^2+28(2)+47\\=2(8)-19(4)+28(2)+47\\=16-76+56+47\\=43`

Hence, f(2) is 43.