The Department of Water Resources is measuring the width of a flood plain adjacent to a levee, as shown by (). The measurements are taken in 15-meter increments as shown in the table below:

Use the indicated method and = 4 to estimate ∫ 120 (top) 0 (bottom) f(x)dx

Show all work. Find:

A. Left-hand approximation
B. Right-hand approximation
C. Midpoint approximation
D. Trapezoid approximation