Eric leans a ladder against the roof of his house so that the ladder forms a 70 degree angle with the ground. the roof of the house is 13 feet above the ground. how far is the bottom of the ladder from the base of the house? round the answer to the nearest tenth.

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