4/15 x 6 in simplest form

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)