What is the difference between 4 ∑ 2n+1 n=1 and 4∑ *2i+1) i=1? 0
3
4
7

The answer is 3, I just wanted to put the answer here cause there was another question that didn't have the answer and I couldn't comment ! I got a 100 on the quiz so tell me if this is wrong (:

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.