7. Four Sierra Vista students went to the AMC theater last night. Admission tickets cost $8.00 per person. Each student got a drink for $3.50 each.
They decided to share one large popcorn for $7.50. If one student paid for
the entire bill and they paid with a $100 bill, how much change is left?

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?