For question 5-8, decide if the set is well-defined or not, and exlain your reasoning. Use the roster method. You may have to do a little Internet reearch. 5. The set of all Americans.
6. The set of all lawyers in Alaska.
7. The set of luxury cars in the 2017 in the model year.
8. The set of all mothers..

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.