Where k= part/whole can be used to find the point if the line ab is partitioned in a 1/4 ratio where a (-2,1) is the starting point b (4,-3) is the end point what is x value of the point partitioned

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!