Solve the Problem $t$ Seconds Is Given By $h = - 9.8 \mathrm { t } ^ { 2 } + 117.6 \mathrm { t }$

question 347

Multiple Choice

Solve the problem.
-If a rocket is propelled upward from ground level, its height in meters after $t$ seconds is given by $h = - 9.8 \mathrm { t } ^ { 2 } + 117.6 \mathrm { t }$ . During what interval of time will the rocket be higher than $343 \mathrm {~m}$ ?

• A) \(10 < t < 12\)
• B) \(0 < \mathrm { t } < 5\)
• C) \(5 < \mathrm { t } < 7\)
• D) \(7 < \mathrm { t } < 10\)

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