Posted by **abigail** on Friday, October 28, 2011 at 5:29pm.

a phone company charges a flat monthly fee of $15 for cell phone services, plus an additional fee for every minute you talk. in a given month, you are charged $36 for the 24 minutes you talked( not including the $15 flat fee.) let the total cost be c(in $) and the time you talk be t(in minutes)

how do i find the dependent and independent variables, and the "fixed" cost of the phone plan, and what cost do you pay per minute. and how do i write an equation relating c and t

- geometry -
**Steve**, Friday, October 28, 2011 at 6:02pm
how is this geometry?

The independent variable is the one that can change by itself. In this case, the number of minutes you talk: t.

c = fixed bill + minute rate*t

The charge for each minute = $36/24 = 1.50 (pretty pricey!)

c = 15.00 + 1.50t

- geometry -
**Marie**, Wednesday, December 10, 2014 at 8:02pm
how would you write an equation for a phone that cost $30 plus 30 cents per minute

- geometry -
**Squad**, Wednesday, December 10, 2014 at 8:03pm
how would you write an equation for a phone that cost $30 plus 30 cents per minute

## Answer this Question

## Related Questions

- Math - In the Math Virtually Everywhere project you completed for this module, ...
- Gr10 Math - Charlene is looking into cell phone plans. Cell plus gives unlimited...
- Algebra - the phone company has two plans for cell phones. the first plan calls ...
- algebra - One phone company charges a fee of $1 and $.50 a minute. Another ...
- math - One phone plan charges a $20 monthly fee and $0.08 per minute on every ...
- math - I need help forming an equation for this word problem.. A long distance ...
- math - 23. There are two telephone companies provide home phone service in New ...
- math - 23. There are two telephone companies provide home phone service in New ...
- Math - Word Problem - Word problems confuse me >_> You are choosing ...
- Math - A cell phone company offers two different plans. Plan A: Monthly fee of $...

More Related Questions