Answer:
The coefficient is negative because she is traveling downward. -20ft/s represents feet decreasing per second.
She was 350 feet above ground since that is her height at 0 seconds.
It takes her 17.5 seconds to reach the ground.
Answer:
Therefore,

Step-by-step explanation:
Simplify
-2^3

It is read as negative 2 raised to the power three,
also it is the cube of negative 2
we know that
given as

so for negative a i.e -a

substituting a = 2 we get

negative sign multiplied by odd number of times then the sign remains negative.
Therefore,

The exact circumference is 60ft
104 ÷ 5.1 = 20.3921
Nearest tenth 20.4