Two airplanes leave chicago at the same time and fly in opposite directions. If one travels at 430 miles per hour and the otherr at 570 miles oer hour, how long wilk it take for them to be 2000 miles apart

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.