### Home > APCALC > Chapter 1 > Lesson 1.4.1 > Problem 1-145

1-145.

Cynthia began to draw midpoint rectangles to approximate the area under the curve for −2 ≤ *x* ≤ 4 given *f*(*x*) = *x*^{3 }−*x*^{2 }− *x *+ 3. Trace Cynthia’s graph and finish drawing the remaining four midpoint rectangles. Then, compute the estimated area. Homework Help ✎

Make the remaining rectangles. Then calculate the areas of each rectangle and add them together to find *A*(*f*, −2 ≤ *x* ≤ 4).

The width of all of the rectangles is