graph on the right shows the average cost of room and board at four-year public and private colleges for four selected years from 2011 through 2017. The data can be modeled by f(x)=943x+3087 and g(x)=38870.135x in This question: 1 point(s) possible which f(x) and g(x) represent the average cost of room and board at public four-year colleges in the school year ending x years after 2010. Use these functions to complete parts (a) through (c) below. Submit quiz Average Cost of Room and Board at Four-Ye Colleges 16000- 14000-Public Colleges 11.099 12000-Private Colleges 10,319 10000- 8000 5630591875184 6000934 525 4000- 2000 2011 2013 2015 2017 Ending Year in School Year a. According to the linear model, what was the average cost of room and board at public four-year colleges for the school year ending in 2013? The average cost in 2013 was $ (Round to the nearest dollar as needed.) b. According to the exponential model, what was the average cost of room and board at public four-year colleges for the school year ending in 2013? The average cost in 2013 was $ (Round to the nearest dollar as needed.) c. Which function is a better model for the data for the school year ending in 2013? OA. The exponential model is better. OB. The linear model is better.