Erika knits 18 squares on monday. she knits 7 more squares each day from tuesday through thursday. how many squares does erica knot on friday?

the correct answers i think are b. and d.

give me brainliest if it is correct!

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)