Respuesta :
10+2h because 10 dollars is coming whether you like it or not then you have to pay 2 dollars per each hour you use it....i would just carry the kid.
10d + 2h = The flat rate of $10.00 paid per day for the stroller rentals plus $2.00 per hour the stroller is being used.
10 + 2h = represents the overall rate for "h" hours of stroller rental.
10 + 2h = represents the overall rate for "h" hours of stroller rental.