There you go. I assumed you know how to derrivate!
Cash Flow statement or actual cash flow is basic component for any financial plan as in acrual accounting actual occurance of expense or income is different from actual payment of cash or receipt of cash in future period so unless financial planner doesn't know the actual future cash receipt and payment situation, it is not possible for him to plan accurately
86? I'm not sure, sorry.
I plugged in the x and y values of the point given
An obtuse angle which is greater than 90 degrees and less than 180 degrees.
Answer:

Step-by-step explanation:
The x-axis represents
and
is 3. The y-axis represents
and
is -4 so
is -4i.