How fast is a bicyclist traveling in miles per hour is his tires are 27 inches in diameter and his angular speed is 5pi radians per second

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42