In quadrilateral ABCD, AE = x + 10, and BE = 3x - 18. For what value of x is ABCD a rectangle?
24
14
18
16

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Simplify the following expression 48^1/2