A sixth-grade student bought three can of tennis balls for $4 each. Sales tax for all three can was $.95. Write an expression to show the total amount the student paid.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet