The following table contains the monthly usage and unit costs for a random sample of$15$ items

from a list of $2,000$ inventory items at health care facility.

$($a$)$ Calculate the annual dollar $($$$)$ of each item.

$($b$)$ Calculate the annual cost percentage of each item

$($d$)$ Calculate the annual volume percentage of each item.

$($d$)$ Group the items into classes based on $-$percent of item value in inventory as well as based on

percent of total cost in inventory

$($e$)$ Draw a graph of percent of item $($x$-$axis$)$ to percent of cost of items $($y$-$axis$)$: