Contestants in a dance a-thon rest for the same amount of time every hour. A couple rests for 21 minutes
in 3 hours. How long did they rest in 8 hours?
The couple rested
minutes in 8 hours.

What are “like terms”? why can we only add like terms?

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.

Prove that 16^4-2^13-4^5 is divisible by 11.