7. The depth of a swimming pool gradually increases from 4 feet to 10 feet. It is 20 feet wide and 30 feet long. If there is 6 feet of water in the deep end, how much work would it take to out of the pool? Water weighs 62.4 pounds per cubic foot. the water pump

2. A wedge whose altitude 20 cm. and whose edge is 5 cm. has a square base of side 8 cm. Find the weight of the wedge if steel weighs 7.2. g./cu.cm.

I need a little extra help?please.

5. How many acres will you be able to spray with one tankful if you apply 30 gallons/acre with a sprayer that covers a width of 60 ft, while applying 3 Ib/acre of pesticide, and have a tank capacity of 600 gal?

How much force would you need to lift 160 lbs?

2. How much water should you add to 223 g of Sodium Chloride to prepare a solution with a molality of 7.52 m? MM of sodium chloride is 58.44 g/mol. Your answer

5. If 15 ft-lbs of work is required to stretch a spring from its natural length of 6 in to a length of 12 in, how much work is required to stretch the spring from 9 in to 18 in? Include units in your final answer. Note: When work is measured in ft-lbs, distance is measured in feet.