Could somebody please explain the problem how this is solved? https://www. wolframalpha. com/input/?i2d=true&i=%5C%2840% 29Divide%5BPower%5B2%2C-5%5D%2C3%5D %5C%2841%29%5C%2840%29Divide%5BPowe r%5B2%2C4%5D%2C3%5D%5C%2841%29 Please be as detailed as possible. Thank you!

Which is an equation for the nth terms of the sequence 12,15,18,21

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.

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species