Nick had $100 in his savings account. Over the next 6 months, he worked at a seasonal store, where each month he earned $400 and spent $250. He put the remaining amount in his savings account each month. Now that the job is over, he plans to spend $200 per month. For how many months can he make withdrawals from his savings account until his balance is $0?

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.