Let m be the number of movies Jill rented online during the month. Since the monthly membership fee is $9.80and there is an additional fee of $1.50 to rent each movie online, the total of the membership fee and the movie rental fees, in dollars, can be written as 9.80+1.50 m. Since the total of these fees for the month was $12.80, the equation 9.80+1.50m=12.80 must be true. Subtracting 9.80 from each side and then dividing each side by 1.50 yields m=2. Choices A, C, and D are incorrect and may be the result of errors in setting up or solving the equation that represents the context.