Find X and the measure of each angle

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

If you could answer these your a life saver

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost