Question

Allison started a game with O points. She earned 2 points for each question she answered correctly. She lost 1 point for each question she answered incorrectly. During the game, Allison answered 12 questions correctly and 4 questions incorrectly. Which expression can be used to find the total number of points she had at the end of the game?

Answer 1

We need to determine the expression that can be used to find the total points she had at the end of the game.

We know that she answered 12 questions correctly. And for each correct question, she earned 2 points. Thus, the number of points she earned is given by the expression:

`12*2`

Also, we know that she answered 4 questions incorrectly. And for each incorrect question, she lost 1 point. Thus she lost:

`4*1`

Notice that, to find the total number of points, we need to subtract the number of points she lost from the number of points she earned.

Therefore, the expression for the total number of points is:

`12*2-4*1`

Writing explicitly 4 for the points she earns and -1 for the points she loses, this expression can also be written as:

`12(2)+4(-1)`

Therefore, the correct option is A.