1. What must the file extension be in order for IntelliJ to correctly import and read using openCSV.

   	a.	.csv
   	b.	.xlsx
   	c.	.xsx
   	d.	.excel

2. Find n using the Taylor Tool Life Equation with the given values:

   Tool Life (min)	Cutting Speed (ft/sec)
   20	60
   6	90

   	a.	0.337
   	b.	2.14
   	c.	-0.337
   	d.	-2.14

3. An unknown material has a cutting speed of 100 ft/min. What is the Machinability Rating of the material?

   	a.	133.3%
   	b.	165%
   	c.	39.4%
   	d.	60.6%