Which has the same difference as 12-6

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

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

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?