Sum = 20(1-(1/4)^5) / (1-1/4) = 26.64
Answer:
The height of the ball is less than 17 feet for t > 2 seconds.
Step-by-step explanation:
The height of the ball after t seconds is given by the following equation:
For which interval of the time is the height of the ball less than 17 feet
This is t for which:
So
Multiplying by -1
The height of the ball is less than 17 feet for t > 2 seconds.