Posted by **sunny** on Friday, January 18, 2013 at 3:17pm.

73. Cell Phone Plan A cell phone plan costs $3.95 per

month plus $0.07 per minute. (Assume that a partial

minute is not rounded up.)

(a) During July, a person talks a total of 50 minutes.

What is the charge?

(b) Write an equation in slopeâ€“intercept form that

gives the monthly cost C of talking on this plan

for x minutes.

(c) If the charge for one month amounts to $8.64,

how much time did the person spend talking on

the phone?

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