How many 2 1/4-foot pieces can be cut from a 15 1/2-foot board?

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

What numbers are included in the set of integers? what numbers are not included?