Answer
$C=0.60x+39$
${{\$}} 105.00\quad$ for 110 miles
${{\$}} 177.00\quad$ for 230 miles
Work Step by Step
Total cost $=$ (cost per mile)(number of miles) $+$ fixed cost
Let
$C=$ cost in dollars.
$x=$ number of miles driven,
Fixed cost =39
A linear equation:
$C=0.60x+39$
When $x=110,$
$C=(0.60)(110)+39={{\$}} 105.00.$
When x=$230,$
$\mathrm{C}=(0.60)(230)+39={{\$}} 177.00.$
