Mathematics knowledge · Difficulty 1
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which expression equals 5(x + 3)?
- 5x + 3
- x + 15
- 8x
- 5x + 15
Reveal answer and explanation
5x + 15
Use the distributive property: 5 × x + 5 × 3 = 5x + 15.