Firefox aboutzblank 27. The consumption of food in the US has varied in the past decades, as shown by the data below. Let x = ii of years since 1940. Billions 4 3. Determine the R2 value for each of following 12 models. Round to 4 decimal places. Unear= Quadratic: Cubic: b. What is the best model to use? c. How much food was consumed in the us. in 1975? Write a system of equations in two variables and solve. 28. 1500 concert tickets were sold for a jazz festival. Tickets cost $25 for covered seats and $15 for lawn seats. Total receipts were $28,500. How many of each type of ticket were sold? Equation 1: Equation 2: Number of tickets sold for covered: Number of tickets sold for lawn seats