The answer is a decreasing exponential function because the percentage of change is constant. You can obtain this answer by looking at the amount of decrease each time and dividing it by the higher value. If you do this for each step, you'll see that there is a 12% decrease for each year.
Attached the solution and work.
10-
15 + 15 = 30
11 + 11 = 22
30 + 22 = 52
52 + 9 = 61
11-
11 + 10 + 16 = 37
Answer:
8. 51
9. 89
10. 20
11. 35
Step-by-step explanation:
sum of the internal angles in a triangle must always total 180 degrees
trick: be careful, sometimes they give you the internal angle, sometimes the external angle
