Posted by Angie on .
You go to dinner and decide to leave a 15% tip for the server. You had $45 when you came to tthe restaurant.
What is a function that relates the cost of the meal c to the amount of money you have left A(c).

Math 
Reiny,
that would be
A)c) = 45  1.15c
eg. if your meal was $30, your tip would be 30*.15 = 4.50
so your meal would cost 34.50
you would have left 4534.50 = 10.50
from the function
A(30) = 45  1.15(30) = 10.50