Consider the function f(x) = 3x² - 18x -1
a. Determine. without graphing, whether the function has a minimum value or a maximum value.
b. Find the minimum or maximum value and determine where it occurs
c. Identify the function?s domain and its range

a. The function has a value
b. The minimum/maximum value is . It occurs at x =
c. The domain of f is . The range of f is .