a group of students organized a car wash to raise money for charity. The students charged 5$ for each car they washed. In 3 hours they washed 12 cars. At that rate, how many cars could they wash in 8 hours

Which compound inequality could be represented by the graph?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?