Answer:
1)
a = 117°
c = 117°
d = 63°
2)
c = 87°
3)
a = 60°
b = 30°
the equation is
p = 600 + 150x
x is month
(when x = 0)
Step-by-step explanation:
The initial value of the exponential equation is:
30·20
=600