Hello, all materials needed should be there. All error messages should be removed, I need help with my final study guide for my calc class. Thank you so much, I appreciate it a lot

4. (10 pts) Optimization: The demand for monorail service in Las Vegas in 2018 can be approximated by q = - 4,0001) + 41,500, where q is the number of rides per day and p is the price for a ride in dollars. What price would maximize the revenue? 5. (10 pts) Elasticity A demand function the latest bestseller is given by a function q = 1:!2 + 33p + 9 where q are copies sold in a week, and p is the price in dollars. a) Find the elasticity function of the demand. b) Find the elasticity if the price for the book is $20 and determine if the price is too high or too low