Brooke has to set up 70 chairs in equal rows for the class talent show. but there is not room for more than 20 rows. what are the possible number of rows that brooke could set up?

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?