Posted by Sarah on Monday, September 21, 2009 at 6:19pm.
Write an equation for:
One taxi company charges $1.50 for the first 2 miles of any trip,and then $1.20 for each mile after that. How is the taxi fare related to the distance of a trip?

Algebra 1  jim, Monday, September 21, 2009 at 7:03pm
Call the number of miles x.
Every trip costs at least 1.50, so we can call that a constant that we add to every trip. It is also the only fare if the trip is two miles or less/
In addition to that, every trip over two miles costs an extra 1.20 * x, except for the first two miles, so that's
1.20 * (x  2)
plus the flat fare for the first two miles.
There will be two rules for the fare, one for two miles or less, and one for more than two miles.
I hope you can finish from there! 
Algebra 1  Sarah, Monday, September 21, 2009 at 7:21pm
Thank you very much. :)