1. There are 9 erasers in each box. How many erasers are in 5 boxes?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?