Need help will give you the brainliest

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

What is the number 321,000,000 in scientific notation? also what is the number? ?

This is about circle theorems. someone asap : (