Shoe Size Former professional basketball player Shaquille O’Neal is 7 feet...

Shoe Size Former professional basketball player Shaquille O’Neal is 7 feet, 1 inch tall and weighs 325 pounds. The table lists his shoe sizes at certain ages.

(a) Write a formula that gives his shoe size y at age x = 20, 21, 22, and 23.

(b) Suppose that after age 23 his shoe size did not change. Sketch a graph of a continuous, piecewise-defined function ƒ that models his shoe size between the ages 20 and 26, inclusive.