IF THE BOOK COSTS 26.50 AND YOU GET A DISCOUNT OF 8%, YOU NEED TO FIND OUT HOW MUCH IS 8% OF 26.50, WHICH IS IS 2.12 DISCOUNT SO YOUR BOOK COSTS NOW 26.50-2.12=24.38 NOW, IF YOU WILL PAY 8% TAXES, EIGHT PERCENT OF 24.38 IS 1.95 YOUR BOOK WILL COST 24.38+1.95=26.33
The quadrilateral is a <u>parallelogram</u> because <u>both pairs of opposite sides</u> are parallel and since the product of the slopes of both pairs of <u>adjacent</u> segments is -1, the quadrilateral is a <u>rectangle</u>