Answer:
20 = 2 + 4x
Step-by-step explanation:
Let x represent the number of hours parked
Since there is a $2 flat charge and each hour costs $4
The total cost can be calculated as → 2 + 4x
Since Tom paid $20:
→ 20 = 2 + 4x
→ 4x = 18
→ x = 4.5
That means Tom stayed 4.5 hours in the garage.