Easy easy 4th grade math for 20 points wait 20 yes 20 ! and only 1 question answer

Which of the choices shown could be used to prove that aacp=abcp ?

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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.