Numeric entries can be read by the system in the following styles:

• Optional thousands separators can be used, so that 1,234 and 1234 will both be accepted.
• Dollar signs will not be accepted in your answers.
• Scientific notation may not be used. Enter numbers in decimal form like 0.0035, and not 3.5E-3.
• You may not enter arithmetic expressions in your answer. Do not enter expressions like 3*7.1; enter the numeric value instead.
• Negative numbers may be denoted either with a minus sign, or by enclosing in parentheses. Both -2.49 and (2.49) will be recognized.