Answer:
Inverse of f(x)=-x^3-9 is ![f^{-1}(x)=\sqrt[3]{-x-9}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Csqrt%5B3%5D%7B-x-9%7D)
Option B is correct option.
Step-by-step explanation:
We need to find inverse of 
For finding the inverse replace f(x) with y

Now, solve for x
Adding 9 on both sides

Multiply both sides by -1

Taking cube root on both sides:
![x^3=-y-9\\\sqrt[3]{x^3} =\sqrt[3]{-y-9} \\x=\sqrt[3]{-y-9}](https://tex.z-dn.net/?f=x%5E3%3D-y-9%5C%5C%5Csqrt%5B3%5D%7Bx%5E3%7D%20%3D%5Csqrt%5B3%5D%7B-y-9%7D%20%5C%5Cx%3D%5Csqrt%5B3%5D%7B-y-9%7D)
Now replace x with f^{-1}(x) and y with x
![f^{-1}(x)=\sqrt[3]{-x-9}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Csqrt%5B3%5D%7B-x-9%7D)
So, inverse of f(x)=-x^3-9 is ![f^{-1}(x)=\sqrt[3]{-x-9}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Csqrt%5B3%5D%7B-x-9%7D)
Option B is correct option.
Answer:
4
Step-by-step explanation:
to find the slope, you have to do rise/run.
you rise up from the first dot 4 times,
then you run once.
4/1
so the answer is 4
Answer:
<em><u>3:25pm</u></em>
Step-by-step explanation:
2:00PM + (40min + 45min) = 85min
<em>hour= 60min</em>
85 - 60 = 25 , its means the amount of the time is 1hour and 25min
1hr25min + 2hr = they finished at <u><em>3:25pm</em></u>