If a person studies for 8hrs a week. How long to they work each day

Find the product of (4x + 3y)(4x − 3y). 16x2 − 24xy + 9y2 16x2 − 9y2 16x2 + 24xy + 9y2 16x2 + 9y2

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?