Pls help I’ve tried everything and nothing is helping me lol. 25 points

Which statement justifies why angle ebc measures 90?

Use the distance formula to find the distance between (-3,5) and (3,1)

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.