3-
You are given a baseball card as a gift, and over the next 9 years, it
follows the polynomial function of f(x) = x³-13x² + 40x + 15 to
determine its value. Sketch a graph of the function over the range of
the 9 years.
a. What is the card's starting value?
b. When does it reach its maximum value, and what value is that?
c. When does it reach its minimum value, and what value is that?
d. How much is it worth at the end of the 9 year period?