Task instructions
Solve efficiently and select the best answer. Show your working in the practice workspace.
What is the mean of 4, 7, 9, and 12?
A. 8
B. 7
C. 8.5
D. 9
Practice workspace
Write notes or your response
02:00
Reveal answer key / expected response
A — 8
Suggested approach
Translate the statement into mathematical form; compute; check units and reasonableness.
Official-style scoring criteria
Correct result and sound quantitative reasoning.