What is x in this statement. 1/4 (3x-16)+1/4x= 5 1/3

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

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.

What is the perimeter of an equilateral triangle if each side is (x+3)?