A rectangle has a length of 16 inches more than three times its height. If the perimeter of a rectangle is 504 inches, find its dimensions. The length equals ___ inches and the height equals ___ inches.

Simplify the expression. -2/5(10+15m-20n)

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.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.