Which of the four representations are incorrect?

What is a rational number between 9.5 and 9.7

What is the 12th term of b(n)=-4-2(n-1)

The distance a bicycle travels with each turn of its wheels is about 3 1/7 times the tire diameter. the tires on mike’s bicycle have a diameter of 24 1/2 inches. how far does it travel with each turn of the wheels?