In the following equation, govrev represents total government revenue in a given year, and taxrate represents the tax rate, which can take on a value ranging from 0 to 1. govrev = 0.31 + 0.42 taxrate - 0.71 taxrate
At what taxrate is govrev maximized?

A. 0.59
B. 0.30
C. 0.15
D. 0.37


Answer: B

Economics

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Economics