Which graph shows a function and it’s inverse?

If it’s neither then i post other options

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

simple 80 pieces in 1 sercing so 80*47=3760+20=3780

in counting the number of heads in 4 coin flips, the probability that we get exactly one head is the probability that we get anyone of the following 4 outcomes: httt, thtt, ttht, or ttth. each has probability 1/16, so the probability to get exactly one head in 4 flips is 1/16 + 1/16 + 1/16 + 1/16 = 4/16 = 1/4.