This problem demonstrates a WeBWorK question that requires you to enter a number or a fraction.

Evaluate the expression . Give your answer in decimal notation correct to three decimal places or give your answer as a fraction.


Now that you have finished you can use the "Prob. List" button at the top of the page to return to the problem list page. You'll see that the problems you have done have been labeled as correct or incorrect, so you can go back and do problems you skipped or couldn't get right the first time. Once you have done a problem correctly it is ALWAYS listed as correct even if you go back and do it incorrectly later. This means you can use WeBWorK to review course material without any danger of changing your grade.