Final answer:
Jayna paid $18,000 in interest and a total of $68,000.
Step-by-step explanation:
To calculate the amount of interest Jayna paid, we can use the formula: Interest = Principal x Rate x Time.
In this case, Jayna borrowed $50,000 with a 4% interest rate for 9 years.
So, the interest paid would be: Interest = $50,000 x 0.04 x 9
= $18,000.
To calculate the total amount paid by Jayna, we can add the interest to the principal.
So, the total amount paid would be: Total amount paid = Principal + Interest = $50,000 + $18,000
= $68,000.