Answer:
(B) 6h; $180
Explanation:
Let h represents the number of hour.
Given,
Payment for an hour = $ 6,
So, the payment for h hours = 6h dollars,
Where, h is a variable.
Thus, the required variable representation is 6h.
If h = 30,
Thus, the total payment for 30 hours
= 6 ( 30 )
= $ 180
Hence, option B is correct.