Hello, Jaylyn,
The month in which her bill totalled $34.49, Jayla watched 6 premium movies for $4.25 each. 6x(4.25) = $25.50 for the movies. Since she paid $34.49 total, there must be a flat monthly charge of ($34.49 - 25.50) = $8.99.
Jayla's new total bill is $55.25. We must subtract the $8.99 charge to find out how much extra was paid for the premium movies.
$55.25 - $8.99 = $46.26, which we'll assume is for the premium movies. Divide that by the cost per movie to find the number of movies rented.
$46.36/4.25 = 10.88 movies.
10.88 is an odd number, so either I've done something wrong or the numbers are incorrect in the problem. We could round to 11 rentals, but I'm hoping there is another reason this doesn't add to a whole number.
Bob