Marcy charges $575 per month to rent a room at her eight-room apartment complex. Running the complex costs Marcy $9,880 per year in upkeep. Assuming that all of the rooms are rented out, how much does Marcy make from her
apartment complex every year?
a $55,200
b. $45,320
C. $65,080
d. $16,780

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The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.