SOLUTION: I am trying to show linear examples in real life. I am still a bit confused, therefore I am having issues with making up an example. Please help this is for my homework. I know

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: I am trying to show linear examples in real life. I am still a bit confused, therefore I am having issues with making up an example. Please help this is for my homework. I know      Log On


   

Question 633577: I am trying to show linear examples in real life. I am still a bit confused, therefore I am having issues with making up an example. Please help this is for my homework.
I know how linear equations are used :
Travel
Temperature Conversion
Exchange Rates
Cell Phones
I just don't understand how to put it into an example.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Travel:
You start for home which is 1000 miles away, your av speed is 60 mph
Let t = driving time
Let d = distance from home
d = -60t + 1000
Example: after 10 hrs (t=10) driving you would be 400 mi (d) from home
:
Temperature Conversion: convert Fahrenheit to Celsius
C = 5%2F9(F-32)
When it's 86 degrees f, what is it Celsius
C = 5%2F9(86-32)
C = 5%2F9*54
C = 30 degrees C
:
Exchange Rates
Convert dollars (d) to baht, the Thai currency. $1 = 20 baht (b)
b = 20d
:
Cell Phones
Cost vs minutes, Monthly fee = $10
First 100 min are free, .25 for each minute thereafter
C = .25(m-100) + 10