Answer:
The answer is 1
Step-by-step explanation:
1
I hope it's helpful for you
if she got 4 questions wrong it would be 12
her score if she got x questions wrong it would be 20-2x
I think any of these would work
10;18
15;28
20;35
x = 4 or x = -4
50+0.03x
All you need to do is look at the numbers given in the word problem and convert them to algebraic terms.