Wall Area room 1 = 60 * 8
Wall Area room 2 = 65 * 10
so
4.8 ( 65*10 / 60*8)
The amount of paint needed to cover the calls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 60 feet and 8-foot walls requires 4.8 quarts of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 65 feet and 10-foot walls.
4 answers
A rectangular box with volume 490 cubic feet is built with a square base and top. The cost if $1.50 per square foot for the top and bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base. Express the cost of the box as a function of x.
height = 490/x^2
cost = 1.50*2x^2+ 2.00*490/x^2
cost = 1.50*2x^2+ 2.00*490/x^2
suppose that the manufacturer of a gas clothes dryer has found that, when the unit price is p dollars, the revenue R(in dollars) is R(p)= -9p^2 +18,000p
What unit price should be established for the dryer to maximize revenue? What is the maximum revenue?
What unit price should be established for the dryer to maximize revenue? What is the maximum revenue?