The answer is C) 4.24
4% + 7% = 11%
to get 11% of 38.50 you move the decimal two spaces to the left on the percent and multiply that number by the other number.
11% ---> .11
38.50 x .11= 4.24.
I hope this answer gave you a better understanding on how to work with percentages! :) Have a good day :)