Consider a machine that exchange quarters for dollar bills. inserting one dollar bill returns four quarters and you may insert up to five one dollar bills at a time. is 7 a possible input for the relation this change machine represents ?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?