Solve the Rational Inequality $\mathrm { h } = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$

question 81

Multiple Choice

Solve the rational inequality. Write the solution set in interval notation.
-If a rocket is propelled upward from ground level, its height in meters after t seconds is given by $\mathrm { h } = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$ . During what interval of time will the rocket be higher than 147 m?

• A) 3 < t < 5
• B) 6 < t < 8
• C) 0 < t < 3
• D) 5 < t < 6

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