For each of the following functions, find
(a) f(4)
(b) f(−3)
(c) f(2.7)
(d) f(−4.9).(See Examples 1 and 2.)
f(x) = 2x2 + 4x
Example 1
Let g(x) = −x2 + 4x − 5. Find each of the given outputs.
Example 2
Finance If you were a single person in Connecticut in 2013 with a taxable income of x dollars and x ≤ $500,000 then your state income tax T was determined by the rule
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