Question

11. Evaluate f(2) for f(x) = x3 + 6x2 + 3x -5.
A. 24
B. 33
C.43
D. 27

Answer 1

B.33

Explanation:

Plug in 2 for x

(2)^3+6(2)^2+3(2)-5=

Answer 2

B

Explanation:

Remark

F(2) means that wherever you see an x on the right side of the equal sign, you substitute 2 for.

Suppose the question was f(2) = 3x + 5

Put a 2 where the x is.

f(2) = 3*2 + 5

f(2) = 6 + 5

f(2) = 11

Equation

f(x) = x3 + 6x2 + 3x -5.

Solution

f(2) = 2^3 + 6*2^2 + 3*2 - 5

f(2) = 8 + 6*4 + 6 - 5

f(2) = 8 + 24 + 1

f(2) = 33