With two math questions? it's about money xd idk how to convert, will give brainliest answers! < 3

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

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.