Jill works 2.5 hours and earns $37.5. How many hours does she have to work to receive $240?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?