I think it's 2.2. I apologize if it's incorrect
The formula for exponential decay is

where a is the initial value (28750)
r is the rate of decrease (0.12)
x is the time, in this case in years (6 . 2018-2012 = 6 years)

<span>y </span>≈ <span>13351.62</span>
Answer:
C. 225 km3
Step-by-step explanation:
Answer:
<h2><u><em>
9/40</em></u></h2>
Step-by-step explanation:
Carol ate 2/5 of the cake; Dima ate 3/8 of the remaining cake, mom ate the rest. What fraction of the whole cake did mom eat?
1 - (2/5 + 3/8) =
1 - 31/40 =
9/40
-----------------
check
9/40 + 2/5 + 3/8 = 1
the answer is good