math
posted by melissa
MaineCellular offers a phone plan that costs $12 per month plus 10 cents per minute. Portland Wireless offers a plan that costs $20 per month plus 5 cents per minute. How many minutes could you use in a month so that it would cost less to use the MaineCellular plan? Be specific in your answer  give the full range of minutes that answers the question.

Rick_the_chemist
X = the cost of MaineCellular's plan
P = the cost of Portland Wireless' plan
T = time in minutes.
X = $12 + $0.10 T
P = $20 + $0.05 T
P = X at the number of minutes that the two costs cross. So, set X = P
$12 + $0.10 T = $20 + $0.05 T
Solve for T.
Once you have T, anything less than T minutes will give one of the plans an edge. Which one?
Anything greater than T minutes will give the other plan the edge.
Respond to this Question
Similar Questions

math
your cellular phone plan costs $11 per month plus $.12 per minute of phone usage.you want to pay no more then $20 per month.What are the most number of minutes (m) that you can allow for phone calls each month? 
Algebra
ABC phone company charges $18 per month plus 7 cents per minute of phone calls. XYZ phone company charges $9 per month and 10 cents per minute of phone calls. How many minutes of phone calls should be made each month to make the costs … 
Math
You have a wireless phone plan that costs $25 per month. You must also pay $.10 per minute for each minute over 500 min. you phone bill was more than $30 last month. Write an inequality to represent the number of minutes m you spent … 
Math
I'm not sure how i'm supposed to set up the equation to solve this. A phone company offers a plan for long distance service charges of .08 per minute. Another phone company offers a plan for $6 per month plus .02 per minute. For what … 
Geometry
Horizon has a cell phone plan for $28.00 per month plus $.30 per minute with unlimited anytime network minutes and a free flip phone for new customers. How do I put this in an equation. Sprint has a plan for $30.00 per month plus $.029 … 
math
Verizon has a cell phone plan for $28.00 per month plus $.30 per minute with unlimited anytime network minutes and a free flip phone for new customers. How do I put this in an equation. Sprint has a plan for $30.00 per month plus $.029 … 
Math ASAP
Verizon has a cell phone plan for $28.00 per month plus $.30 per minute with unlimited anytime network minutes and a free flip phone for new customers. How do I put this in an equation. Sprint has a plan for $30.00 per month plus $.029 … 
Math
One cell phone plan costs $15 per month plus $0.10 per minute used. A second cell phone plan costs $50 per month for unlimited use. Write and solve an inequality to find when the second plan is cheaper than the first. 
Algebra I
You have decided to try and convince your parents to let you get your own cell phone. After finding out that the flat monthly rate for unlimited minutes $35.00, which you can afford, you offer to pay the cost yourself. However, just … 
Math
Suppose your cell phone company offers two plans. The paypercall plan charges 14 dollars per month plus 6 cents per minute. The unlimitedcalling plan charges a flat rate of 22 dollars per month. How many minutes per month must you …