This is a question of Simple Interest. The simple interest is given by the formula:
That is:
Interest = Principal * Rate * Time
From the question, we have:
P = $10
R = 5% ---> 5/100 = 0.05
T = 2 years
Then, we have that the interest is (without units):
Therefore, the interest is $1.
However, Kayla will have in two years this interest plus the starting amount, that is:
$10 + $1 = $11.
Hence, Kayla will have $11 in two years in her savings account.