An equation that represents the set of points that are 2 units from (-2,-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.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?