How do I solve this question?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7