Eight years ago, Genie was twice as old as Sam. Four years from now, Sam will be 3/4 of Genie's age. How old is Sam now? Explain your answer, and show all work.

Find the quotient. 50a2 – 98b2 -5a +7b

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?