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Solve the Problem H\mathrm { H } (In Meters) After x\mathrm { x }

Question 242

Multiple Choice

Solve the problem.
-If a rock falls from a height of 80 meters on Earth, the height H\mathrm { H } (in meters) after x\mathrm { x } seconds is approximately H(x) =804.9x2\mathrm { H } ( \mathrm { x } ) = 80 - 4.9 \mathrm { x } ^ { 2 }
What is the height of the rock when x=1.5x = 1.5 seconds? Round to the nearest hundredth, if necessary.


A) 72.65 m72.65 \mathrm {~m}
B) 68.98 m68.98 \mathrm {~m}
C) 91.03 m91.03 \mathrm {~m}
D) 69.2 m69.2 \mathrm {~m}

Correct Answer:

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