Total miles covered to Key West = 432 miles
Analysis of Mr Putney's rent goes as thus:
$99 + $0.11 per mile over 100 miles
=$99 + $0.11 x (432-100) miles
=$99 + $0.11 x 332
=$99 + $36.52 = $135.52
Analysis of Mr Baitz rent goes as thus:
$75 + $0.15 per mile over 150 miles
=$75 + $0.15 x (432-150) miles
=$75 + $0.15 x 282
=$75 + $42.3 = $117.3
Looking at the two results, the company with the lower rent cost of $117.3 has the better deal , which is Baitz rentals.