Answer
Left endpoint area $\approx 13$
Right endpoint area $\approx 15$
Work Step by Step
$\triangle$$x$ = $\frac{2-0}{4} = \frac{1}{2}$
Left endpoint area $\approx \frac{1}{2}[5+6+7+8] = \frac{26}{2} = 13$
Right endpoint area $\approx \frac{1}{2}[6+7+8+9] = \frac{30}{2} = 15$
$13 \lt$ Area $\lt 15$
