If the area of the square above is 144 what is the value of x

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.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)