Find all possible values of x. (Enter your answers as a comma-separated list.)

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

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

Which statement justifies why angle ebc measures 90?