The area of an 8-inch pizza is 50.24in.
the area of a 12-inch pizza is 113.04in.
the cost of the 8inch pizza is $7.00. the cost of the 12-inch pizza is $12.50. which size pizza is the better buy? explain

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

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.

Aa at 9 a.m. it at 4 p.m. he a of $28.84.?