Concept explainers
Cost and revenue. A manufacturer of radios estimates that his daily cost of producing x radios is given by the equation
The equation
R = 25x represents the revenue in dollars from selling x radios.
a. Write and simplify the profit function
b. Find P(20). What does the number P(20) represent?
c. How many radios should the manufacturer produce and sell to have a daily profit of $500?
d. Find the composite function( R o x) ( C). What does this function represent?
[Hint: To find x(C), solve
for x.]
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Precalculus: A Unit Circle Approach (3rd Edition)
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