Lucia finds that What error did Lucia make?
She found the difference instead of the sum.
She combined the terms 3x2 and 7x2 incorrectly.
She combined the terms 3x and –9x incorrectly.
She did not combine all like terms.

d? maybe

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)