Emily and her sister earned money shoveling snow over winter break. Altogether they shoveled for a total of 40 hours. Jenna charged her customer $13 per sidewalk, and her sister charged $10 per sidewalk. If they earned $461.50 total, how many hours did each girl spend shoveling? help me gawddam

The area of a rectangle is 54x^9y^8 square yards. if the length of the rectangle is 6x^3y^4 yards, which expression represents the width of the rectangle in yards

41/17 as a decimal rounded to the nearest hundredth

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?