The question is in the picture above! please help!!

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

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

What is the range? can’t seem to find it out