The answer is B) n+6. Simply because penny is 6 inches taller than Claire, which means you would have to add 6 inches to Claire's height to reveal penny's height. Also n represents Claire height which makes the expression easier to figure out.
<span>To find the average we need to sum the number of people in all the concert and divide it by the number of concert.
Average = (935+1100+1100) / 3
= 3135 / 3
Average number of people in the three concerts = 1045 people</span>