PL HELP IM BEGGING YOU Make your own real-world problem that can be modeled by the fraction: y=100(2)^x

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Maria solved an equation as shown below. what is the solution to maria’s equation?