Mathematics: 5a (b - c) = d solve for b a. b = d - 5ac / 5a b. b = d + 5ac / 5a c. b = d - 5c / 5a d. b = d + 5c / 5a

5a (b - c) = d solve for b a. b = d - 5ac / 5a b.

babygirlgabby2137

24.07.2021

The area after 5 years is 3120.841 square kilometer

Solution:

The decreasing function is given as:

y = a(1-r)^t

Where,

y is future value

a is initial value

r is decreasing rate

t is number of years

From given,

a = 4800

t = 5

$r = 8.25 \% = \frac{8.25}{100} = 0.0825$

Therefore,

$y = 4800(1 - 0.0825)^5\\\\y = 4800 \times 0.9175^5\\\\y = 4800 \times 0.6501\\\\y = 3120.841$

Thus the area after 5 years is 3120.841 square kilometer

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