Answer:
9 feet
Step-by-step explanation:
The height of the ball in feet is given by the polynomial:

where t is the time in seconds.
After 3 seconds, t = 3:

The height of the ball after 3 seconds is 9 feet.
Answer:
It is the Coefficient
Step-by-step explanation:
1/2bh
1/2b4 = 18
b4= 36
b= 9 yards
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