Question: A quadratic function f is given. f(x) = 9x^2 + 42x = 11 (a) determine whether the given quadratic function has a maximum or a

A quadratic function f is given.

f(x) = 9x^2 + 42x = 11

(a) determine whether the given quadratic function has a maximum or a minimum value. Then find this value.

(b) Find the range of f. (Answer should be in interval notation)

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