For each of the following problems, write your answers on the whiteboard.[br][br]1. Write the following base ten numbers in expanded form.[br][br]a. 342[br][br]b. 9,834[br][br]c. 20,115[br][br]d. 999,999[br][br][br]2. Convert the following base two numbers to base ten.[br][br][size=85][size=100]a. 11[sub]two[br][/sub][/size][br]b. 101[sub]two[/sub][br][br]c. 1111[sub]two[/sub][br][br]d. 10001[sub]two[/sub][size=100][sub][sub][/sub][/sub][/size][/size][sub][sub][/sub][/sub]