Please help <3 Here is a set of signed numbers:

7, -3, 1/2 , -0.8, 0.8, -1/10, -2

1. Order the numbers from least to greatest.
2. If these numbers represent temperatures in degrees Celsius, which is the coldest?
3. If these numbers represent elevations in meters, which is the farthest away from sea level?

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.

Me. i can't figure out this question. give an explanation too. .

Answer pls man im trying to get out of summer school