Advanced MathEasyWriting a multiple in terms of a variable
Advanced Math practice question
A box holds n pens. Which expression gives the number of pens in 3 such boxes?
- A. 3nCorrect
- B. n + 3
- C. n³
- D. n/3
Answer: A. 3n
Three boxes hold n + n + n = 3n pens.
Why the other answers are wrong
- B. n + 3
- n + 3 adds 3 pens, not 3 boxes.
- C. n³
- n³ multiplies n by itself three times.
- D. n/3
- n/3 divides the pens among three boxes.
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