Solve the problem.An object's altitude, in meters, is given by the polynomial h + vt - 4.9t2, where h is the height in meters from which the launch occurs, v is the initial upward speed in meters per second, and t is the number of seconds for which the rocket is airborne. A pebble is shot upward from the top of a building 157 meters tall. If the initial speed is 45 meters per second, how high above the ground will the pebble be after 3 seconds? Round results to the nearest tenth of a meter.
A. 471.9 meters
B. 247.9 meters
C. 277.3 meters
D. 336.1 meters
Answer: B
Mathematics
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