1.solomon says, "i have drawn a triangle. it has one angle of 30° and another
angle of 40°. adeline, you draw a triangle with the same two properties."
adeline says, "my triangle will be congruent to yours because all triangles that
have those two properties must be congruent."
is adeline correct to say that all triangles with these two properties must be
congruent? explain your answer.

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.