Answer:
Dear user,
Answer to your query is provided below
Inverse is 3√(x-25)
Step-by-step explanation:
Explanation of the same is attached in image

Pooled Combined Variance 
Test Statistic:



Degrees of freedom = 


The table value is greater than the calculated value.
Thus we accept H0.
Answer:
Decimal= .75
fraction= 75/100; 3/4
Step-by-step explanation:
Look at the axis graph. If both of the coordinates are negative, it would be in quadrant lll. If you go over to the x-axis, you would be in quadrant lV, or 4.
(-2,-3) -> (2,-3)
You change the x-factor's sign.
I hope this helps!
~kaikers