In a survey of 500 randomly selected residents, 300 were opposed to the use of photo-cops for issuing traffic tickets. Construct a 95% confidence interval for the proportion of residents opposed to the use of photo-cops for issuing traffic tickets.

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.