David is playing a game. He started with 10 points. In the first round he lost
20 points. In the second round he won 45 points. Which of the following
shows the change in David’s score?
a) 10 − 20 + 45
b) 10 − 20 − 45
c) −10 − 20 + 45
d) −10 − 20 − 45
Answer:
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Since a given player’s scoring average can be determined by dividing the sum total of points scored by the number of games, we can determine the total points of the scoring leader by multiplying the average points per game by the total number of games. 18 x 7 = 126. Angela would have to score 1 more point than the current scoring leader. Angela’s current total is 87 points; therefore, she must score 40 (87 + 40 = 127) over the course of the final two games to have the highest average points per game in the league.
d) −10 − 20 − 45