Hello here is a solution :
The answer is 6.5 because if you multiply 4 and 3, you only need to find what you need to multiply to get to the goal number, 78.
In the first position we have 10 possible numbers, and the same for the 2nd and 3rd positions becuase the numbers are replaced, so our answer is because of the multiplication rule.
Answer:
B part Rate the 0ercent that interest is paif anually as a decimal