<span>Basically "Opportunity cost" is what you're going to lose (or have a potential to lose) if you chose a different action than what you're presented with. In the example, you're working for $15 an hour, but if you decide instead to skip a pratrice to go to the fair you're losing out of the $15 an hour you'll be paid and have to pay $9 to go to the fair. All total, you're opportunity costs for that will be $24 (fifteen you would have made plus the nine dollar fee.) This is also assuming, of course, they don't fire/dock you for just skipping work.</span>
Bachelor degree in accounting. it makes the most sense
Mandatory spending is something that either has, or is strongly urged to be done. Discretionary spending is based on the spenders discretion, if the spender thinks it needs to be spent, then they would do so. Example of mandatory spending would be paying back a loan. Example of discretionary spending would be a good business investment. Hope this helps!