Evie has scores of 72, 78, 80 and 84 on four science quizzes. what score must she get on the next quiz to have an average of at least 80?

27 is what percent of 108? 27 is % of 108

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?