AlgebraHardFilms rented from a monthly bill
Algebra practice question
A streaming service charges $8 a month plus $3 for each film rented. In a month when the bill was $26, how many films were rented?
Answer: 6
8 + 3f = 26 gives 3f = 18, so f = 6.
Common wrong answers
- If you answered 18
- 18 is the cost of the films, not the count.
- If you answered 8.67
- 8.67 divides 26 by 3, ignoring the monthly fee.
- If you answered 11.33
- 11.33 divides 34 by 3, adding the fee instead of subtracting.
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