It says I have this wrong I’m very confused as the calculator says this is correct? Im in need of a lot of help and it would be very appreciated if someone could provide the answer

Name the most appropriate metric unit for each measurement like the mass of cow

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.

Two numbers have a sum of -19. one number is x. what expression represents the other number?