the 3rd time needing help today...

Problem:

Use the trapezoidal rule to approximate the

on the interval using 6 trapezoids of equal height.

I believe the height for each trapezoid will be 2 because 8-(-4) is 12, 12/6=2

I never get the graphing part...

I thought I could get the two main bases of the big trapezoid by plugging in -4 and 8 into the integrand

I got -5 and 115

tried to graph it, didn't go well

are

the other pts that should be plugged into the integrand to find the heights of the rectangles that will be connected to make trapezoids, or directly find the bases of each trapezoid?