For income tax​ purposes, a man uses a method called​ straight-line depreciation to show the loss in value of a copy machine he recently purchased. He assumes that he can use the machine for 9 years. The following graph shows the value of the machine over the years. Use this graph to answer the following question. What was the purchase price of the copy​ machine?

2.   2 3/5.

3.   2 1/2.

step-by-step explanation:

6 - 3 2/5

= 6 -   17/5

= 30/5 - 17/5

= 13/5

= 2 3/5 (answer).

5 1/4 - 2 3/4

= 21/4 - 11/4

= 10/4

= 2 1/2 (answer).

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

addition

step-by-step explanation: