Luke is going to repaint both sides of the door of his room. the door is 36 inches long by 80 inches high. his options at the paint store are below. 1 gallon of paint costs $10 and covers 4,400 square inches of area. 12 gallon of paint costs $7 and covers 2,200 square inches of area. if the door requires 2 coats of paint, what is the minimum cost of painting the door of luke's room?

Solve 2x+y=3 x+y=5 in substitution method

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?