a$.$ Monthly factory equipment depreciation, straight$-$line method is used

Monthly electric cost for a convenience store; $$50$ base monthly fee plus $$\mathrm{.}006$ per

b$.$ kilowatt used

Total salary costs for a craft supplies store; managers are paid a salary, and the other

c$.$ workers are paid by the hour

Oil disposal fees for an automotive maintenance company. The oil disposal fee is based

d$.$ on two components: a $$100$ base fee plus a usage fee $($to encourage reduction of waste$)$:

$\backslash$table$[[$Up to $10$ barrels.,$$6$ per barrel$],[11-25$ barrels.,$$9$ per barrel$],[$More than $26$ barrels,$$13$ per barrel$]]$

Monthly smartphone expense for a mobile grooming business; the phones are billed

e$.$ at a rate of $$40$ for unlimited voice, data, and text for each cell phone

f$.$ Wood costs for a table manufacturer; the cost of direct materials per table is $$52\mathrm{.}00$

g$.$ Customer service representatives are paid $$15\mathrm{.}25$ per hour

Monthly vehicle lease costs for a company that pays $$295$ month plus $$0\mathrm{.}25$ per mile

h$.$ for any miles driven over $1,000$ per month