There are 18 girls and 12 boys in your class. what is the probability that a new kid entering your class will be a boy?

6.3x+14 and 1.5x-6 answer in simplified form

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?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?