At a benefit concert, twelve bands have volunteered to perform but there is only enough time for eight of the bands to pay. How many lineups are possible?

Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer