Correct Answer: Option A

Explanation

y = 243(4x + 5)^-2, find \(\frac{dy}{dx}\)

= -1944(4x + 5)_-3

= 1944(9)_-3

\(\frac{dy}{dx}\) when x = 1

= -\(\frac{1944}{9^3}\)

= -\(\frac{1944}{729}\)

= \(\frac{-8}{3}\)

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