Ages | Number of students 15-18 | 8
19-22 | 2
23-26 | 9
27-30 | 7
31-34 | 3
35-38 | 6
Based on the frequency distribution above, find the cumulative frequency for the class with lower class limit 27

What is the correlation coefficient for the data? don't forget to turn the diagnoisticon (in the catalog menu of the calculator). r = answer (round to the nearest thousandth)

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.

What number is 7 units left of -15?