austin invests 4500 with a bank at 5 1/4%simple interest. how much does he earn after a year.
would the answer be 4500*.0525*1=236.25
Right.
Yes, your calculation is correct. To determine the interest earned using simple interest, you multiply the principal amount (in this case, $4,500) by the interest rate (5 1/4% or 0.0525), and then multiply it by the time period in years (in this case, 1 year):
$4,500 * 0.0525 * 1 = $236.25
Therefore, Austin earns $236.25 after one year with a 5 1/4% simple interest rate.