Select all that apply. which of the following statements are true of the greatest common factor of two numbers? a. each number must share the factor. b. the number must be large. c. the greatest common factor could be 1. d. the number must be the largest factor both numbers share. and why cant it be the others

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.