A long distant runner started on a coarse at an average speed of 9 mph. Half an hour later, a second runner began the same course at an average speed of 12 mph. How long after the second runner starts will the second runner overtake the first runner?

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

c.

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