At a lemonade stand, the first cup costs $1.50, and refills cost $0.20 each. if a customer paid $1.90 in total for his first cup and refills, how many refills did the customer order?

Four equations are shown below.equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list.why each equation you identified is linear or nonlinear.nd one nonlinear equation from the list. state a reasonlinear equation