Answer:
Option B: $20x + $30 < $170 is the correct answer.
Explanation:
Given that:
Service fee of Tina's business = $30
Per day charges = $20
Number of days = x
Customer's budget = less than $170
According to given statement;
20x + 30 < 170
Hence,
Option B: $20x + $30 < $170 is the correct answer.