Answer:
the number of hours is >4
Explanation:
given data
Derrick's Doggie
$12 registration fee plus $5 per hour for pet sitting.
the total charges for Derrick's Doggie will be
y=12+5h---------------1
Pauline's Pooch Park charges $3 per hour plus an $18 registration fee.
the total charges for Derrick's Doggie will be
y=18+3h---------------2
equating 1 and 2 we can solve for h which is the number of hours
12+5h=>18+3h
12-18=3h-5h
-8=-2h
h=8/2
h=>4