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Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

The equation of the line in this graph is y =_ x + _

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?