What is the range of f(x) = 4^x?

A. All positive real numbers

B. All real numbers greater than 4

c. All real numbers

D. All real numbers greater than or equal to 4

A because it goes from (0,infinity) so all positive real numbers

70

step-by-step explanation:

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