just draw the two lines as normal
Note where they intersect.
where one line is below the other, that is where it has the better price.
Two cell phone companies have different rate plans. Runfast has monthly charges $8 plus $8 per gig of data. B A &D’s monthly charge is $15 plus $4 per gig of data. Your task, is to determine under what circumstances each company has the better pricing. You will derive and solve a set of equations, graph those equations, and evaluate the meanings for these events.
My equations, that I came up with.
Runfast = 8g + 8
BA*&D'S = 4g + 15
For my subisitution method
8g + 8 = 4g + 15
8 - 4 = 4
4g + 8 = 15
15 - 8 = 7
7/4
4g is less than 7/4
The thing is I'm having trouble graphing this. I'm confused on how I can graph 7/4.
1 answer
1 answer