Kim is trying to decide whether she can afford a loan she needs in order to go to chiropractic school. Right now Kim is living at home and works in a shoe store, earning a gross income of $1,070 per month. Her employer deduct $210 for taxes from her monthly pay. Kim also pays $128 on several credit card debts each month. The loan she needs for chiropractic school will cost an additional $85 per month. Help Kim make her decision by calculating her debt payments-to-income ratio with and without the college loan. (Remember the 20 percent rule.)

Because of the violent nature of the sport, professional american football players are at risk of suffering concussions (or brain injuries) during the violent collisions that occur between players during the game. violent collisions involving hits to the head are particularly risky. suppose the commissioner of the national football league (nfl) institutes a rule requiring players to wear a new, lighter helmet that is designed to reduce head trauma during collisions between players on the field. while the new helmets the probability of a concussion resulting from each individual collision, at the same time the new helmets could also give football players an incentive to play more , which could potentially the amount of violent collisions and thus the number of concussions suffered by nfl players, all else equal.