You paid $25 for your ticket to the football game, only to see your favorite team losing 28-0 at the end of the first quarter. That $25 should now be regarded as a(n) cost that economists say should be in your decision on whether or not to stay at the game or leave.

Allie and sarah decided that they want to purchase renters insurance for the apartment they share. they made a list of all of the items to be covered by the insurance policy, along with their estimated values. if the items to be covered total more than $3000, the insurance company charges an annual premium of 23% of the total value of the items. if the items to be covered total $3000 or less, the insurance company charges an annual premium of 20% of the total value of the items.