Natalie picked 135 berries in 15 minutes. if she continues picking at that rate, how many total minutes will it take her to pick 486 berries this is a work pad question

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.

If value of cos330° is √3/2 then find tan165°.

How can you find the mean absolute deviation (mad) for this set of data?