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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 4/5

A projectile's height is h(t)=−16t2+64t+80h(t) = -16t^2 + 64t + 80. At what time does it reach maximum height?

  • A

    t=2t = 2

    check_circle
  • B

    t=5t = 5

  • C

    t=1t = 1

  • D

    t=4t = 4

Explanation

Vertex at t=−64/(−32)=2t = -64/(-32) = 2.

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