Question 500214
$2.50 is the meter drop.
The meter drop plus .2 miles(1/5 mile)times 40 cents is the price of the trip. 
A mile costs fourty cents times five.
A mile costs 2 dollars.
You want X to equal a mile.
2.5+2X=cost of trip.
For one mile 2.5 + 2 = 4.5 (four and a half dollars)