Question 347811
call the set-up fee {{{s}}}
Call the hourly fee {{{h}}}
total cost = (hourly fee)x(hrs) + set-up fee
For Gina:
{{{230 = h*5 + s}}}
(1) {{{5h + s = 230}}}
For Lori:
{{{125 = h*2 + s}}} 
(2) {{{2h + s = 125}}}
Subtract (2) from (1) 
(1) {{{5h + s = 230}}}
(2) {{{-2h - s = -125}}}
{{{3h = 105}}}
{{{h = 35}}}
The hourly rental fee is $35