Bettsy1348 Bettsy1348
  • 11-03-2024
  • Mathematics
contestada

The fuel economy (in miles per gallon) of a certain car is E(x) = −0.01x^2 + 0.66x +10.4,where x is the driving speed (in miles per hour, 20 <= x <= 60). At what speed is fuel economy greatest?

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