This question asks for a number answer. Good answers include whole numbers, integers (negative numbers), and decimal values. In special cases, you may need to enter DNE for "Does not exist", oo for infinity, or -oo for negative infinity. If your answer is not an exact value, you'll want to enter at least 4 decimal places unless the problem specifies otherwise. Try entering more than 4 to test it Try it out: Enter at least 4 decimals of 7.123456789 below