Can Somebody Help me with this? The triangles below have the same perimeter
Find the value of x and the perimeter

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 slope of the line (-7,2) (4,6)

Find the axis symmetry of x y=4x-6x+3