600 at 5% for 2 years

Which is an equation for the nth terms of the sequence 12,15,18,21

After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error