Sunday

April 20, 2014

April 20, 2014

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

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 slope–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?

- math -
**PsyDAG**, Sunday, January 20, 2013 at 1:55pma. Per month = 3.95 + 50(.07) = ?

b. y = .07x + 3.95

c. 8.64 = .07x + 3.95

Solve for x.

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