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Mathematics 9 Online
OpenStudy (anonymous):

A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute at an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute? h(t)= at^2 + vt + h0 a. 2.4 s b. 9.7 s c. 12.5 s d. 14.8 s

OpenStudy (anonymous):

I'm stuck between B and C.

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