9 to the power of four, 6,561
The speed is the change of distance over the change of time.
s = (d - d1)/(t - t1)
where the subscript 1 indicates as "initials."
The initial time starts at zero. So,
s = (7000 - 10000)/(15 - 0) = -200 feet (elevation) per minute
The value is negative because the hang glider flew downward.
One week from now, the amount will be ...
... $50 + 0.20×$50 = $50 + 10 = $60
Two weeks from now, the amount will be ...
... $60 + 0.20×$60 = $60 + 12 = $72
_____
The first expression can be factored to be $50 × (1 + 0.20) = $50×1.2.
The second expression can be factored the same way to be $60×1.2, or ...
... ($50×1.2)×1.2 = $50×1.2²
... = $50×1.44 = $72
Yes because the political aspect of this question