199.
the z score for the 90th percentile is 1.28, so you can solve the equation

which gets you the 199
Answer:
Common ratio: -3
Geometric sequence: an=5(-3)^n-1
Step-by-step explanation:
Each number multiplied by -3 gets the product of the next number. (5*-3= -15)
It would be -56, just multiply as normal
It is linear since but it isn't proportional
Answer:
your answer should be 15%