Evelyn is taking a multiple choice test with a total of 20 points available. Each question is worth exactly 1 point. What would be Evelyn's test score (out of 20) if she
got 3 questions wrong? What would be her score if she got x questions wrong?

Step-by-step explanation:

Given

Solving (a): 3 questions wrong

First, we need to determine the total possible points

--- (1)

Next, is to determine the points of 3 questions

--- (2)

Subtract (2) from (1)

Her test score is 17 points

Solving (b): x questions wrong

--- (3)

Subtract (3) from (1)

Her points would be 20 - x points

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

the answer is y = 11.54

hope this : )