Answer:
The hourly fee is $ 3.
Step-by-step explanation:
Given,
The initial fee = $ 43,
Let x be the additional hourly fee ( in dollars ),
Thus, the total additional fee for 7 hours = 7x dollars,
And, the total fee for 7 hours = Initial fee + Additional fee for 7 hours
= ( 43 + 7x ) dollars,
According to the question,
43 + 7x = 64
7x = 21 ( Subtracting 43 on both sides )
x = 3 ( Divide both sides by 7 )
Hence, the hourly fee is $ 3.