Task instructions
Use the on-screen-calculator style workspace where helpful. Enter an exact value for numeric-entry items.
If x² = 361, which positive value can x have?
A. 19
B. 18
C. 20
D. 361
Practice workspace
Write notes or your response
02:00
Reveal answer key / expected response
A — 19
Official-style scoring criteria
Correct mathematical reasoning and answer format.