Amultiple-choice test consist of 100 questions. a correct answer is worth two marks, while an incorrect answer is worth -1 marks, if a student receives a score of 80, how many questions of the student answer incorrectly

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

I’m confused on how to work the pie charts

Y+ 2/y is it a polynomial in one variable or not? and if so, why?