Some points were initially placed on a line. After that, a point was inserted between each pair of neighboring points. After that, such an insertion was repeated two more times. 113 points are on the line as a result. How many points were placed on the line initially?

The initial number of points on the line was 15.

Step-by-step explanation:

8n-7=113

8n=120

n=15

15 points

Step-by-step explanation:

Initial number of points= x

It can be added 1 less points between the existing ones, so:

Step 1

Step 2

Step 3

Now,

Number of initial points is 15

step-by-step explanation:

stop cheating

step-by-step explanation: