2. d
a) Name the vertex of the angle.
b) Name the sides of the angle.
c) Give three ways to name the angle.
H
M
d) Classify the angle:

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?

Which one is the correct answer, and why?