Terrance and jesse are training for a long distance race. terrance trains at a rate of 6 miles every half hour, and jesse trains at a rate of 2 miles every 15 minutes. what is the unit rate in miles per hour for each runnner?

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.