These types of building blocks are an energy source.
a. fats
b. water
c. vitamins
d. minerals

the answer is a

step-by-step explanation:

because your just changing the position of where the shape is

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function