QUESTION #5 A student purchases a mobile phone plan in which she is billed a flat fee of $5.15 per month plus $0.07 per minute for each call up to a total of 400 minutes. a. Write a linear equation that relates the monthly charge C, in dollars, to the number x of minutes used in a month. b. Find the domain of this function. c. Graph this equation. d. What is the monthly charge for using 150 minutes of calls? e. Interpret the slope of the line.

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A: We have to solve the differential equation:

Q: Please solve and show all work.

A: Please refer below page.If you have any doubts please feel free to ask.Explanation:Step 1: Step 2:

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A: Proof is given below Explanation:Step 1:Step 2: Step 3: Step 4:

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A: Please see the attachment Explanation:

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