19 Find the perimeter of the
regular pentagon below.
7x29x 2

Adding subtracting and multiplying geometry applications

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 .

Which of the following points is collinear with (-2,1) and (0,3)

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3