The cost increases by $60 for every hour you rent, so '60x' represents this part of the equation. Since it increases $60 for each hour, there is a flat rate of $120 to rent the limo since at the first hour, the cost is $180. $180 - $60 = $120
The absolute value of 4/13 is 4/13 because when you put something in absolute value it becomes positive and sense this is already positive it stays. hope this helps :))))
