For his birthday Zweli receives money from his parents and he decides to go to a local sneaker shop to buy a pair of sneakers which costs five times as much as the accompanying R400 baseball cap he has chosen. If the cashier gives Zweli R100 change for his two purchases, how much did he receive for his birthday?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.