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B, 5/4s

Step-by-step explanation:

If something increases by 1/4, it means that it is the original number + 1/4 of it.

Ex: x + 1/4x = 5/4x

So if we substitute s for x, the answer must be 5/4s, or B

d

step-by-step explanation:

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)