AlgebraEasyInequality for notebooks within a budget
Algebra practice question
Kim has $20 and wants to buy as many $3 notebooks as she can. Which inequality describes the number n of notebooks she can buy?
- A. 3n ≤ 20Correct
- B. 3n ≥ 20
- C. n ≤ 3
- D. 20n ≤ 3
Answer: A. 3n ≤ 20
The cost 3n must not exceed $20.
Why the other answers are wrong
- B. 3n ≥ 20
- She cannot spend more than she has.
- C. n ≤ 3
- 3 is the price, not a cap on notebooks.
- D. 20n ≤ 3
- Price and money are swapped.
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