zoe walked 20 miles. the next day she walked 16 miles. what is the percent of the decrease of zoes walking. I will give brainlist if you answer WITH WORK

With number 11 ( show how you got the answer)

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

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.