In this graph, Write the equation of the line in fully simplified slope-intercept form. Please help me with this equation! I need help

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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?

Which of the following scenarios demonstrates an exponential decay