Write an equation to model the given problem.
Susan paid $36.90 for nine washcloths. What is the unit price p per washcloth?
A36.90p = 9
Bp/9 = 36.90
Cp/36.900 = 9
D9p = 36.90
Susan paid $36.90 for nine washcloths. What is the unit price p per washcloth?
A36.90p = 9
Bp/9 = 36.90
Cp/36.900 = 9
D9p = 36.90