the linear equation when b = 5 and m = –2 is

y = 5x – 2.

y = 5x + 2.

y = –2x – 5.

y = –2x + 5.

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.