SOLUTION: It costs $1.50 per day to place a one line ad in the classifieds plus a flat service fee. One day costs $3.50 and four days costs $8.00. Write a linear equation that the cost in do

Algebra ->  Linear-equations -> SOLUTION: It costs $1.50 per day to place a one line ad in the classifieds plus a flat service fee. One day costs $3.50 and four days costs $8.00. Write a linear equation that the cost in do      Log On


   



Question 121613: It costs $1.50 per day to place a one line ad in the classifieds plus a flat service fee. One day costs $3.50 and four days costs $8.00. Write a linear equation that the cost in dollars, y, in terms of the number of days the ad appears, x.
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!

let f the name of the fee
then 1.5+f=3.5 then f=2

then y = 1.5x + f or y = 1.5x + 2
(look that verifies 4 days $8 )