Al and barb both go to the store to buy school supplies, al buys 11 colored pencils for $0.69 each, and barb buys 3 packs of folders for $2.70 per pack. who spent more at the store? explain.

15 point ! ~ see if you know the answer to both you!

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?