Take the total cost and subtract the registration fee. 56.25-12.5=$43.75 The remainder is what was spent on swim classes so divide by the cost of the swim classes. $43.75/8.75=5 swim classes
<span>The sum of angles CAD and DAB is 180 degrees. This is because they are all on a straight line (because points CAB are colinear) and angles on a straight line add up to 180 degrees.</span>