We are told that f(x) = x + 2. We want to find 
.
Squaring f(x) on one side means we square x + 2 on the other.
So,
f(x) = x + 2
(f(x))² = (x + 2)²
= (x + 2)(x + 2)
We can use FOIL to square x + 2. The first terms multiply to x², the outside terms to 2x, the inside terms to 2x and the last terms to 4.
= x² + 2x + 2x + 4
= x² + 4x + 4
So [f(x)]² = x² + 4x + 4
Answer: C
Step-by-step explanation:
To find the surface area of a cone, you use the formula 
. Since we are already given the height and radius, all we have to do is plug in the values and solve.
[solve inside of square root]
[parenthesis]
[multiply]
Therefore, the closest answer is C.
It is 20.because 3×4+2cubed is 20
^
=12 ^
2×2×2=8 so 8+12=20
Corinne : b - 6 years old;
her brother : b years old.
The sum: b - 6 + b = 2 b - 6
Answer: B )
