Find the circumference of each circle with the given radius or diameter round to the nearest tenth use 3.14 for pie r=9 cm

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution