Evaluating a Function In Exercises 25-28, evaluate the function at the specified values of the independent variable. Simplify the results. See Example 3. f ( x ) = x 2 − 4 x + 1 (a) f ( − 1 ) (b) f ( 1 2 ) (c) f ( c + 2 )
Evaluating a Function In Exercises 25-28, evaluate the function at the specified values of the independent variable. Simplify the results. See Example 3. f ( x ) = x 2 − 4 x + 1 (a) f ( − 1 ) (b) f ( 1 2 ) (c) f ( c + 2 )
Solution Summary: The author calculates the value of f(-1) if the function is x2-4x+1.
Evaluating a Function In Exercises 25-28, evaluate the function at the specified values of the independent variable. Simplify the results. See Example 3.
The daily cost to a printer is modeled by the function C(x) = 4x + 1400 where C(x) is the total daily
cost and is the number of copies printed. Find C(7000), and interpret its meaning.
C(7000)
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Enter an integer or decimal number [more..]
This value represents
O The product of the daily cost and the number of copies
O The number of copies manufactured when the daily cost is 7000
O The daily cost when 7000 copies are printed
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The publisher of a medical newsletter estimates that with x thousand subscribers its monthly revenue can be modeled by the
function, R(x) = 60,000x - 50x and cost (in thousands of dollars) is modeled by the function C(x) = x+ 100x + 800. Write the
function, in standard form, to represent the medical newsletter's profit, P(x), if P(x) = R(x) -C(x).
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