What is volume of a sphere with radius of 9 inches. need to know the steps also.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.

Jim had 15 minutes to do 5 laps around his school what would his time be