Answer:
E. is 103 degree.
It's a vertical angle.
F. is 77 degree
the e and f makes a 180 degree. 180-103(aka e) = 77 degree
D. is 90 degree. it's perpendicular.
1 should be b and 2 should be a
Answer:
B) It decreases 22% per year.
Step-by-step explanation:
We are given that The value, v(.r), of his portfolio can be modeled with the function : 
Where x is the number of years since he made his investment.
Formula :
Where P = Principal
r = rate of decrease
t = time
A = Amount after t years
So, On comparing
P = 30000
t=x
A=y(x)



So, r = 0.22
r=22%
So, Rate of decrease is 22%
So, Option B is true,
It decreases 22% per year.
Into an improper fraction. An improper fraction is a fraction where the denominator is smaller than the numerator.
Example: Mixed number: 1 2/3
Improper fraction: 5/3
I don't really know if this is correct but I think it is x+y+z=14