On january 7 joelle opened a savings account with $900.it earned 2.1% interest, compounded daily. on january 8she deposited her first paycheck of $76.22.what was her balance at the end of the day in january 8?

Compute the ending balance of the opening balance for the first day then add deposited amount after that compute the balance
The formula is
A=p (1+r/k)^kt
A future value
P present value
R interest rate
K compounded daily 365
T time in days x/365

To sum up kt =365×(1/365)=1 day
A=900×(1+0.021÷365)^(1)
A=900.0517808219... the balance before the amount deposited is added

Now add the amount deposited
900.0517808219+76.22
=976.2717808219

Calculate the balance using the same formula
A=976.2717808219×(1+0.021÷365)^(1)
A=976.33. ..answer

Hope it helps!