Test: ACT Math

1.

Best friends John and Elliot are throwing javelins. The height of John’s javelin is described as f(x) = -x2 +4x, and the height of Elliot’s javelin is described as f(x) = -2x2 +6x, where x is the horizontal distance from the origin of the thrown javelin. Whose javelin goes higher?

 

Elliot’s

Insufficient information provided

The javelins reach the same height

John’s

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