Answer:
-4/5
Explanation:
Let's compare the given quadratic function \( f(x) = -2x^2 \times 2^2 \) with the information that the leading coefficient is \( 5r-4 \).
The leading coefficient of the quadratic function is simply the coefficient of the highest-degree term, which in this case is \(-2 \times 2^2 = -8\).
Now, you've mentioned that the leading coefficient is \(5r-4\). Equating the two expressions:
\[-8 = 5r-4\]
Solving for \(r\):
\[5r = -8 + 4\]
\[5r = -4\]
\[r = -\frac{4}{5}\]
So, according to the given information, \(r\) is \(-\frac{4}{5}\).