You buy 144 inches of ribbon at 15 cents per yard and 3 1/2 pounds of tomatoes at 48 cents per pound. What is your change from a $20 bill? (SHOW YOUR WORK).

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Which one ? is the answer and how to find this answer