G(x) = -x^2/4 +7
What is the average rate of change of g over the interval [-2, 4]?

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

X+ y = 5 ; x - y =3 solve using linear combination

Can someone me find the original price? the discount is 5% and the sale price is $68.40