Question

generally, if you are entering a decimal answer, it should contain 4 significant digits (e.g. 2.718 or 12.34) to get 0.1% precision, unless otherwise specified in the exercise.
if the answer tip says to enter a \mathematical expression\, you can enter an answer like $sqrt{2}$ or 1.414, but unless its the exact answer, 1.41 would generally not be accepted.

lets review
what type of answer is the box below expecting according to the blue answer tip below the box?

the box accepts select an answer
which of the following would be acceptable answer formats according to the expanded answer tip below?

Explanation:

1. For the first question, the blue tip explicitly states "Enter a mathematical expression", so the box accepts mathematical expressions (which can be exact forms like $\sqrt{2}$ or decimal equivalents with sufficient significant digits like 1.414, not truncated values like 1.41).
2. For the second question, the expanded tip specifies answers as integers, decimal numbers, or specific terms like DNE/oo, so acceptable formats are integers (e.g., 3, -4), decimal numbers with proper precision (e.g., 5.5172), "DNE" for Does Not Exist, and "oo" for infinity.

Answer:

1. The box accepts: A mathematical expression (exact form like $\sqrt{2}$ or precise decimal like 1.414)
2. Acceptable answer formats:

• Integers (e.g., 3, -4)
• Decimal numbers with proper precision (e.g., 5.5172)
• "DNE" (for Does Not Exist)
• "oo" (for infinity)