In Fairbanks, Alaska, the average temperature in January is -9.7°F. The average temperature in July is 62.4°F. On average, how many degrees
colder is Fairbanks in January than in July?

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

Find the solution of each of the following.