Afunction which is used to represent a problem, and which can be used to solve the problem, is called a

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

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?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry