Solve.If a rock falls from a height of 90 meters above the ground, the height H (in meters) after x seconds can be approximated using the formula H = 90 - 4.9x2. What is the height of the rock after 4 seconds?
A. 11.6 m
B. 1361.6 m
C. 70.4 m
D. -294.16 m
Answer: A
Mathematics
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