Miguel is making smoothies out of yogurt and juice to serve to his friends, and he needs to make 12 cups. the ratio of yogurt to juice is 2 cups to 1 cup.

how much yogurt will he use?

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.