Alain lanzó una piedra desde un puente al río de abajo. La altura de la piedra (en metros sobre el agua) xxx segundos después de que Alain la lanzó está modelada por:
h(x)=-5x^2+10x+15h(x)=−5x
2
+10x+15h, left parenthesis, x, right parenthesis, equals, minus, 5, x, squared, plus, 10, x, plus, 15
¿Cuál es la altura de la piedra en el momento que la lanza?
metros.

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