Find the value of x. The diagram is not to scale.
(3x+10)
1489
°
112°

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

Having a hard time understanding this question (see attachment).

Find the measure for the angle indicated in bold