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.

Answer 1

Equation for the number of cards in the first pack: c1 = 6x or 10x or 12x or 15x (where x represents the number of packs)
Equation for the number of cards in the second pack: c2 = 6y or 10y or 12y or 15y (where y represents the number of packs)
Total cost equation: 2(3) = 6 dollars
Cost of first pack equation: c1(0.25)
Cost of second pack equation: c2(0.30)
Total cost equation: 0.25c1 + 0.30c2 = 6