Pre-Calc/Chapter 2: Polynomial, Power, and Rational Functions/2.1 Linear//Quadratic Functions and Modeling/2.1.2 Quadratic Functions Solve the problem.  The number of mosquitoes M(x), in millions, in a ... Solve the problem.  

The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: M(x) = 20x - x². What rainfall produces the maximum number of mosquitoes?]]> 1.0000000 0.3333333 0 true true abc 0 in. Incorrect 10 in. Correct 20 in. Incorrect 400 in. Incorrect