Answer:
the number
is three million times larger than 
Step-by-step explanation:
To answer this, just do the quotient of the first one over the second one, and use the rules for quotient of exponential expressions of the same base:

So the answer is: the number
is three million times larger than 
Answer:
Median: 15
Mean: 14.875 or 14.9 if rounded
Step-by-step explanation:
To find the median, arrange the numbers in order from least to greatest and find the middle value between the numbers.
To find the mean, add all the numbers and divide by however many numbers there are.
Z(x)=6x^3+19x^2-52x+15
(6*-5)^3+19*-5^2-52*-5+15
Z(x)= -17,700