Find the length of con each graph. When necessary, round to the nearest tenth.
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2.

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.

The value √10 and √15 are plotted on the number line

Prove that 16^4-2^13-4^5 is divisible by 11.