CPM Homework Help : CALC Problem 1-127

Approximate $A(f, -2 ≤ x ≤ 3)$ for $f(x) = x^2 - x - 6$ using $10$ left endpoint rectangles. .

Hint:

Find the sum of the areas of all $10$ rectangles. What is the width of each rectangle? How can you calculate the height of each one?

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