Please help this is so tiring I didn’t get any sleep ty.

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

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.

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?