How would you write 8^5 as a multiplication expression?

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 .

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.