Meghan earns money babysitting. She charges $5 an hour before 8 P. M. and $8 an hour after 8 P. M. She earned $26 for her last babysitting job. Between what hours did Meghan babysit?​

Ineed to know the answer to this algebra question.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

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?