Question 98397
WE START WITH 1.25 FOR THE FIRST .2 MILES.
THEN WE ADD .25 FOR THE REMAINING 7.3 MILES IN .2 MILE INCREMENTS.
THERE ARE 7.3/.2=36.5 1/5 (OR .2) MILE INCREMENTS.
NOW WE MULTIPLY THESE 36.5 INCREMENTS BY .25=9.125
NEXT WE ADD THESE TWO FEES 1.25+9.125=10.375 FOR THE BASE FEE.
NOW WE MULTIPLY THIS BY 1.15 TO INCLUDE THE 15% TIP.  
(1.25+[.25*7.3/.2])1.15
(1.25+[1.825/.2])1.15
(1.25+9.125)1.15
10.375*1.25=$11.93 FOR THE TAXI RIDE.