Answer:
C
Step-by-step explanation:
Exponential decay should be in this format A = Ao × e^(-kt)
27x-6=9x-1
27x-9x =-1+6
18x = 5
x = 5/18
Answer:
n = 13
Step-by-step explanation:
The sum of the measures of the interior angles of an n-sided polygon is
(n - 2)180
Set (n - 2)180 equal to 1980 and solve for n.
(n - 2)180 = 1980
Divide both sides by 180.
n - 2 = 11
Add 2 to both sides.
n = 13
The answer is D because 42 / 6 = 7 and the power ( ^X) can cancel out each other
