What is the number in standard form? 3.23×10^12 select your answer from the drop down menu. i need this in under 5 minutes

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

If 20% of a number is 35, what is 50% of that number?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?