Three times the sum of four and t is less than forty? somebody me i need now

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

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.

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?