Pls solve them all pls

What are the related frequencies to the nearest hundredth of the columns of the two way table? group 1: a-102 b-34group 2: a-18 b-14edited: i don’t have all day to be waiting for an answer. i figured it out.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.