Simplyfy the following expression..35+(_13)+(+8-(-6).

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

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?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is