Posted by **Sonji** on Sunday, January 15, 2012 at 11:30am.

Find out how many calls must be made to make Plan A the better deal.

• Plan A: $45 a month for unlimited calling Plan B $15 a month .10 per min.

I need to write a cost equation for plan A and for plan B then I need to solve.

- math -
**Reiny**, Sunday, January 15, 2012 at 11:36am
Plan A: cost = 45

Plan B: cost = .10x + 15, where x is the number of minutes

You want to know when

.10x + 15 > 45

x + 150 > 450

x > 300

check:

for 299 minutes:

PlanA = 45

PlanB = 29.90 + 15 = 44.90

...... Plan B is still better

for 301 minutes:

Plan a = 45

PlanB = 30.10 + 15 = 45.10

.... Plan A is better for x > 300

## Answer This Question

## Related Questions

- math - You need to choose between two phone plans for local calls. Plan A ...
- Management Science - For your phone calls, you can either A) buy a prepaid ...
- math - cellular phone companies. 1. with this plan each person is charged $19.95...
- math - Verizon has a cell phone plan for $28.00 per month plus $.30 per minute ...
- Math ASAP - Verizon has a cell phone plan for $28.00 per month plus $.30 per ...
- Geometry - Horizon has a cell phone plan for $28.00 per month plus $.30 per ...
- Math - I have the same problem as Marita. Can someone tell us what equation to ...
- Math - i reposted this cause i really need help: greg is considering 2 different...
- Math - A phone company had two plans for business. Plan A charged $12.00 a day ...
- math - Jamia is deciding between two long-distance telephone plans: • Plan A ...

More Related Questions