Answer:
The area after 6 years is 
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Step-by-step explanation:
Given
--- Initial Value
--- Rate
Required
Determine the area after 6 years
Because the area reduces,, the following formula will be used to solve the question.

Here

So, we have:

Convert percentage to decimal



-- approximated
<em>The area after 6 years is </em>
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Answer:
5
Step-by-step explanation:
The fractions already have a common denominator of 5
7^2x4 = n^8
7^8 = n^8
n = 7
Y = kx
4.8 = 4k
k = 4.8/4 = 1.2
Therefore, required equation = y = 1.2x