Listen The accompanying diagram shows the graph of which inequality?
-3+
1.
y 2.
y> X + 1
3.
y s X + 1
4.
y = x + 1
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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?