The measure of one of the angles in a certain linear pair is 12 more than the measure of the other angle, what is the measure of the other?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

How is this equation completed? i cannot find any examples in the book.

Tim tradesman pays $2,000 annually for $125,000 worth of life insurance. what is the cash value of the policy after 10 years? 11,125 13,125 17,800 111,250