Each gram of salt contains 0.393 g of sodium. how much sodium is in 55.7 g of salt

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Rationalize the denominator- 12x/√x-10

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work