Your class will decorate the walls of your math computer lab with posters of great mathematicians. Your teacher finds a catalog that sells posters for $2 each. There is an additional charge of $4 to ship an order. Suppose that your class paid $54 for posters. Write and solve an equation to find how many posters (p) were ordered. Highlight your equation in green. And solve your equation (show your work). Use p to represent the number of posters ordered.