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

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

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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) (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 )
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