A car rental company charges for mileage as follows: 3 dollars per mile for the first n miles and 4 dollars per mile for each mile over n miles. How much will the mileage charge be, in dollars, for a journey of d miles, where d > n ?
Pick: A) 5d-n B) 6d-n C) 7d-n D) 8d-n E) 4d-n
Total Distance in miles = d   Millage Charge = 3n + (d-n) 4   3n --&gt; For the first n Miles   (d-n)4--&gt; Total no of miles after traveling the first n miles is d-n and the rate after n miles is 4 .   If we solve the equation , We will get 4d-n   Answer : 4d-n
<result>E</result>
A car rental company charges for mileage as follows: 3 dollars per mile for the first n miles and 4 dollars per mile for each mile over n miles. How much will the mileage charge be, in dollars, for a journey of d miles, where d > n ?