Let y = 21 and x = 1.5. if y varies directly with x, find y when x = 9.

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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?