Use the functions f(x) and g(x) to answer the question f(x)=x^2-16 ; g(x) =x+4 which is equal to (f/g)(x)?
a. x+4,x=-4
b. x-4,x=4
c. x-4,x=-4
d. x+4,x=4

How many revolutions will a car wheel of diameter 28 in. make over a period of half an hour if the car is traveling at 60 mi/hr? the final answer is supposedly 21,609 but i have no idea how to get that, show work : )