The answer is D because when multiplied by 1/10 you move the decimal place of 7 one space to the left so 7 now equals .7 and when multiplied by 1/100 23 is moved two spaces to the left to make .23
Answer: 27a^3
It is 27a^3 because if you do 3×3=9 then 9×3= 27
The answer to 685 divided by 49 = 13.979