If enabled by your instructor, an answer format tip
is displayed below the answer box when it is selected and provides
information about the form of the answer that is expected.
Either of the following answer format tips might be shown:

Enter a mathematical expression

Enter a mathematical expression or equation with exact values

These questions are often displayed with the symbolic formatting help button . You can click this button to see the allowed notation.

Any response that is equivalent to the answer formula will be graded as correct. For
example, 4x+12 would be equivalent to (x+3)4. You can enter an asterisk (*) for
multiplication or use implicit multiplication with variables.

Type your answer using calculator notation and the exact variables specified in the question.

Unless the question asks for your answer to be in a specific form, any mathematically correct
expression that is equivalent to the key will be accepted as correct.

Click the preview button to see the expression you entered in formatted mathematical notation.
This is often important in order to see if you have placed your parentheses
correctly.

Clicking the preview button in the above question would display the following
formatted notation:

Edit your response and preview it again if needed. Submit your response only
when the formatted notation is correct.

Note

Angles for trigonometric functions are expressed in radians.

Answers are case-sensitive; x and
X are not the same.

Do not type commas in numbers; 5,280 is not correct.