Emma has $1,400 in a savings account that earns 1.5% annual simple interest. how much money will be in her account if she does not make any deposits or withdrawals in the next 24 months?

$1442
Because I=prt but this equation is only for simple interest the variables then would be interest=principle*time*rate
Your time is 24 month which is equal to 2 years, the principle is 1400 and the rate is 1.5% but you would change it to a decimal which would be 0.015 because a percent is out of a 100 
So the equation is Interest=1400*0.015*2 
The interest is $42 and then it asks what would be in her account if she does not make any deposits or withdrawals so you would add the interest to her account and that would be $1442.
The other type of interest is compound and it has a different equation