1.

C=60+0.25d The equation represents the monthly cost of a cell phone that includes up to 1 gigabyte of data after which there is a charge for d gigabytes of any additional data. Which of the following must be true? I. The cost of each additional megabyte of data is $60.25. II. The y-intercept of the graph of the cost equation represents the charge for each additional megabytes of data used. III. If betwee 5 and 6 megabytes of data are used in month, the monthly charge is $61.25.

Answer»

I and II only
I and III only
II only
III only

Answer :D


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