A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
One cell phone plan costs $39.95 per month. The first 500 minutes of usage are free. Each minute thereafter costs $.35. Write a rule that describes the total monthly cost as a function of the number of minutes of usage (over 500 minutes). Then find the number of minutes of usage over 500 minutes for a bill of $69.70?
 2 years ago
One cell phone plan costs $39.95 per month. The first 500 minutes of usage are free. Each minute thereafter costs $.35. Write a rule that describes the total monthly cost as a function of the number of minutes of usage (over 500 minutes). Then find the number of minutes of usage over 500 minutes for a bill of $69.70?

This Question is Closed

CalebBeavers
 2 years ago
Best ResponseYou've already chosen the best response.1Let c=cost and m=minutes of usage(over 500 minutes) c=.35m+39.95

CalebBeavers
 2 years ago
Best ResponseYou've already chosen the best response.1So to find the number of minutes over 500 for a bill of $69.70, substitute 69.70 into the equation for c and solve for m

shivraj
 2 years ago
Best ResponseYou've already chosen the best response.0c = $39.95 + $0.35 e Now to find the number of minutes over 500 in a bill of $69.7 $69.7 = $39.95 + $0.35 e $29.75 = $0.35e $29.75 / $0.35 = e 85 min = e The person talked an extra 85 min over 500 min, or a total of 585 minutes used.
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.