Help please with Graphic and 3rd Task PLEASE I will give 20 points

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

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false

Solve the system of equations. 2x-2y=-4 and x+y=8. show work