Please answer 1a and 1b correct as the questions states :D

Problem 1: Average Value Problem 1 Suppose you are interested in investing in a particular mutual fund. You research the annual rate of return of the fund over the past 5 years and find the following graph: Note that the vertical axis (R) represents the percentage annual return, and the horizontal axis (t) represents time measured in years. Assume that t=5 represents the present day and that t=0 represents 5 years ago. a. Based on the graph, does it appear that the average annual rate of return is at least 3%? How can you tell? Describe your answer based on what you learned in this week's reading or by providing a sketch. b. The graph of the annual percentage rate of return by the function shown above can be approximated by the equation R(t) = its + t2 2t + 3. Using this function, compute the average rate of return for the past 5 years. For full credit, be sure to show your work carefully