Business: Movie Prices National average theatre admissions prices for recent decades...

Business: Movie Prices National average theatre admissions prices for recent decades are shows in the following graph.

a. Number the bars with x-values 1–6 (so that x stands for decades since 1950) and use quadratic regression

to fit a parabola to the data. State the regression function. [Hint: See Example 10.]

b. Use the regression function to predict movie prices in the years 2020 and 2030.