How do I do this problem? I need a step by step.

$[0/4$ Points$]$

J

SESSCALCET$25\mathrm{.}1\mathrm{.}001.$

Consider the following equation and figure.

a$=100$

$($a$)$ By reading values from the given graph of f$,$ use five rectangles to find a lower estimate and an upper estimate for the area A under the given graph of f from x$=0$ to x$=200.$

A~~

x $($lower estimate$)$

A~~

X $($upper estimate$)$

$($b$)$ Find new estimates using ten rectangles in each case.

A~~

x $($lower estimate$)$

A~~

X $($upper estimate$)$

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