20% of the students purchased their lunch. 180 students brought their lunch from home. How many students are in the sixth grade?

A backpack manufacturer produces an internal frame pack and an one hour and let y represent the number of external frame packs produced in one hour. Then the inequalities x+3y=0 describe the constraints for manufacturing both packs.

Actually can ride her bike 15 miles in two hours there are 60 minutes in one hour and there are 1760 yards in 1 mile how many yards is Ashley travel each minute

Maya made $252 for 12 hours of work. at the same rate, how many hours would she have to work to make $168?

Allen is putting weed killer on the field to get ready for planting the directions say on the container to use it for fifth of a quart for each acre of land how much weed killer will Allen need for two fields one that is 22 1/2 acres and one that is

1200+0.0005x=1500+0.0015x

A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

If f (x) = x^2+1 and g (x) = x-4 which value is equivalent to (f•g) (10)

Mia credit card balance is less than - 85 Does she owe more or less than 85

Use an area model to multiply 45x61

The 3-liter bottles of soda are selling for $2.10. Graph the price of 3-liter bottles.