Andrew is taking a multiple choice test with a total of 80 points available. Each question is worth exactly 2 points. What would be Andrew's test score (out of 80) if he got 8 questions wrong? What would be his score if he got x questions wrong?

71

Step-by-step explanation:

80 deduced to its smallest #is 5 and so each question is worth 5 points

scores with 8 question wrong: 80-2(8)=64

Scores with x questions wrong: 80-2x

Step-by-step explanation:

Since Andrew loses 2 points for every question wrong. He would loose 2x8 or 16 points when getting 8 questions wrong. Since the best is out of 80 points, his final score would be 80-16 or 64 points

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value