Respuesta :

we get that f(x) has a maximum when

[tex]-0.6x-3=0\rightarrow x=-\frac{3}{0.6}=-5[/tex]

so we get that

[tex]\begin{gathered} -0.3\cdot25-3\cdot-5+c=-225 \\ -7.5+15+c=-225 \\ 7.5+c=-225\rightarrow c=-225-7.5=-232.5 \end{gathered}[/tex]

so c=-232.5

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