1. Alya loves to read. She reads 90 pages in half an hour. How many pages does she read per minute?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?