Select the correct answer.
roberta is thinking about joining the food co-op store. if she pays $10.00 to join, she will get 10% off on all the groceries she buys there. how much must she buy before her savings equal her membership fee?
$10.00
$50.00
$100.00
$1,000.00

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.