$400 intrest is earned on a principal of $2,000 at a simple interest rate of 5% interest per year. For how many years was the principal invested.

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

the answer is 15.50 for one mile

b) is slope: 0   y- intercept 15.5