79.70 (6898),x7578
Step-by-step explanation
A15,15,15 B from the top15,1,45,3,15 C 30,2,30,2,15
Answer:

Step-by-step explanation:
Given
-- initial

Required
The exponential equation
The exponential equation is

Where

We used minus, because the rate decreases..
So, we have:



So:


Hence:

Answer:
165432
Step-by-step explanation:
165432 - 65432 = 100000
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