A movie is 2 and a quarter hours long. A family is able to watch 2/6 of the movie before having to leave the theater. How many hours of the movie did the family watch?

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

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?