Mr. Vlasic needs to buy 2 pens each for the 17 students in his class. If pens come in packs of 6 and each pack costs \( $2.35\), what is the minimum amount that Mr. Vlasic must spend?
Mr. Vlasic needs to buy 34 pens in all. Since the pens come in packs of 6, Mr. Vlasic must buy at least 6 packs (36 pens) in order to have enough pens for all his students. So Mr. Vlasic must spend at least \(6 \times $2.35 = $14.10\)