The formula for the distance between two points $(x_1, y_1)$ and $(x_2, y_2)$ in a plane is given by:
\[d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\]
Substituting the given points A(-7,0) and B(-2,-4) into the formula, we get:
\[d = \sqrt{(-2 - (-7))^2 + (-4 - 0)^2}
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