10 points!asap.
maxine spent 15 hours doing her homework last week. this week she spent 18 hours doing homework. she says that she spent 120% more time doing homework this week, is she correct? explain.

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Find the solution of this system of equation -7x+y=-20 9x-3y=36