Hi! Just need some help with these questions please.

For Question #1 I got:

R(x) = - (22581/ 4)x^2 + (2660343/20) x -1253639/2 = -5645.25 x^2 + 133017.15 x -626819.5 for Question #1

For Question #2 I got:

E(x) = - (15113/20) x^2 + (3523979/20) x - 4379534/5 = -7555.65x^2 + 176198.95x - 875906.80

Project II - Modeling Quadratic Functions The table below shows the operating revenue and expenses of 25 U.S. Schedule Service Passenger Airlines Financial Report in 2015. (Source: Bureau of Transportation Statistics) Operating Revenue (millions of dollars) 138 827.00 130 517.70 153,293.90 148,048.00 156,470.30 150,467.00 161 596.70 150 35.70 169,276.50 154,676.60 168 874.20 140 881.00 1. Find the quadratic model that is the best t for the operating revenue, with at equal to number of years after 2000 (round to three decimal places). Label this function R(x). 2. Use the functions found in part (a) and part (b) to write the prot function. Label this function P(x). Use the formula P(x) = ROE) - [E(x)] to write the revenue function. 3. What is the average rate of change (slope) in the prot 'om 2010 to 2015? Explain what this means in the context of the application. (Hint: First nd the x and y-values that correspond to 2010 and 2015. Use these values to nd the average rate of change, i.e. the slope)