Sports Cameron is playing 9 holes of golf. He needs to score a total of at most 15 over par on the last four holes to beat his best golf score. On the last four holes, he scores 5 over par, 1 under par, 6 over par, and 1 under par.

a. Write and find the value of an expression that gives Cameron’s score for 4 holes of golf.

b. Is Cameron’s score on the last four holes over or under par?

c. Did Cameron beat his best golf score?

Herman is standing on a ladder that is partly in a hole. He starts out on a rung that is 6 feet under ground, climbs up 14 feet, then climbs down 11 feet. What is Herman’s final position, relative to ground level?

Explain the Error Jerome tries to find the value of the expression 3 - 6 + 5 by first applying the Commutative Property. He rewrites the expression as 3 - 5 + 6. Explain what is wrong with Jerome’s approach.

Lee and Barry play a trivia game in which questions are worth different numbers of points. If a question is answered correctly, a player earns points. If a  question is answered incorrectly, the player loses points. Lee currently has -350 points.

a. Before the game ends, Lee answers  a 275-point question correctly, a 70-point question correctly, and a 50-point question incorrectly. Write and find the  value of an expression to find Lee’s final score.

b. Barry’s final score is 45. Which player had the greater final score?

Multistep Rob collects data about how many customers enter and leave a store every hour. He records a positive number for customers entering the store each  hour and a negative number for customers leaving the store each hour.

a. During which hour did more customers leave than arrive?

b. There were 75 customers in the store at 1:00. The store must be emptied of customers when it closes at 5:00. How many customers must leave the store between 4:00 and 5:00?