$30.50-$17.79 is $12.71. I hope that helps you :)
Unit rate is when a rate is simplified so it has a denominator of 1 (x = 1) and y≠ 0
unit rate = y/x
Answer: Point C <span>represents the unit rate</span>
The prime numbers on the dice are 1,2,3,5 and 7 , the theoretical probability is

, which is 62.5%, the number of prime numbers in the outcome is 15, so the experimental probability is

, which is 75%, the difference between the experimental probability and the <span>theoretical probability is 12.5%.</span>