Hailey is taking a multiple choice test. Her grade is given by the equation y=90-2xy=90−2x, where yy represents her final score and xx represents the number of questions she got wrong. What could the number 2 represent in the equation?
The points she loses for every wrong question.
The score she would get if she only missed one question.
The number of problems on the test.
A perfect score on the test.