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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.

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read