Technical Engineering presently leases a copy machine on a monthly basis. The

lease agreement requires a fixed fee each month in addition to a charge per copy.

Technical made 2,400 copies and paid a total of $162 in rent in September, and

in October they paid $195 for 3,500 copies.

37. Technical Engineering's variable cost per copy is calculated to be:

a. $0.07

b. $0.06

c. $0.04

d. $0.03

e. $0.05

Explain!!