Joe and janna leave home at the same time, traveling in opposite directions. joe drives 45 mph and janna drives 40 mph. in how many hours will they be 510 miles apart?

The graph of the the function f(x) is given below. find [tex]\lim_{x \to 0\zero} f(x)[/tex] [tex]\lim_{x \to 1+\oneplus} f(x)[/tex] [tex]\lim_{x \to 0-\zeroneg} f(x)[/tex]

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?

Which expression is equivalent to 64 - 9x^2?