Answer:
Atmost 50 miles

Explanation:
We are given that a taxi service offers a ride with 45 surcharge and charges $0.50 per mile.
We have to find how many miles can a customer travel and spent at most $30.
Charge of one mile=$0.50
Let x be the miles travel by customer
According to question

Subtracting 5 on both sides


Divide by 0.50 on both sides


Hence, the customer travel atmost 5 miles