Many problems require you to enter a number or expression in an answer box, using the keyboard Answer the following question by clicking in the answer box and typing your answer. Then click the Check Answer button. 'You might also want to try an incorrect answer to see the feedback that will be displayed 4+1=5 (Simplify your answer. Type a whole number.) Did you notice? The special instructions, in parentheses, that appear after the answer box give directions about how to enter your answer. It is important to read and follow these instructions so that your answer will be entered in the correct form. Unless it is otherwise stated, your answer should be exact and simplified as much as possible The math tool palette contains templates that you can use to enter fractions, exponents, roots, and other special math notation. The math tool palette is shown along the bottom of the window and only appears when you click into an answer box. You can expand it to show more tool buttons or collapse it to show fewer buttons. To use the palette: 1. Click on the location in the answer box where you want to insert a symbol or template. 2. Click on the button in the math palette for the symbol or template you want to insert. 3. Once a template is inserted, click in the blue box to fill in the necessary value(s) 4. Click or use the directional arrows to move the cursor outside the template in order to continue entering your answer. The math tool palette is not present in this step because there is no answer box. You will be able to practice using the palette in one of the following steps. Careful: Always be sure to delete any unused templates from the answer box before clicking "Gheck Answer.\" For your answer to be complete, all the blue boxes within each template must be filled in. > Select the picture(s) below that show answers that are complete, meaning that they do not contain any empty blue boxes from a template. Select all answers that are complete. A. 129 B. X - c. 3x2 + 4y D. (2, -4 ) OE. None of the above answers are complete