Barry''s mountain bike weighs 6 pounds more than andy''s. if there bike weighs 42 pounds altogether, how much does barry''s bike weigh?

Can you simplify 4/7? 24 points will be awarded!

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

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.