There are about 20 million people in New York State, with a total land area of about 47,000 square miles. What is the population density of New York State?

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.