How do you solve b and c in this circle theorem question? attached image is provided. Please state the geometric rules you used please. Thanks

The parabola opens: y=√x-4 (principal square root) up down right left

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.

14. (05.02 lc) what is the value of y in the solution to the following system of equations? (5 points) 2x + y = −4 5x + 3y = −6