Answer
see below
Work Step by Step
Let the number of miles the truck has driven= x.
$Cost \ C = 0.60 x + 39 $
Cost of renting the truck if the truck is driven 110 miles
$Cost \ C = 0.60× 110 + 39$
$= 66 + 39$
$ = 105$
Cost of renting the truck if the truck is driven 230 miles
$Cost \ C = 0.60×230 + 39$
$ = 138 + 39$
$= 177$
