The smallest number of distinct points that can define a plane would be 3 points. Below this value, you cannot create a plane, you can only create a line or a point. A plane that has three point is called a triangle. Hope this helps. Have a nice day.
Answer: 10%
Explanation:
Given: Previous Hourly pay= $7.00
Current Hourly pay = $7.70
Increase in hourly pay = Current Hourly pay - Previous Hourly pay
= $7.70- $7.00
= $0.70
Now, the percent increase in her hourly rate of pay will be :

Hence, the percent increase in her hourly rate of pay = 10%
C. railroad...............