Fernando had 2 children. Each of their children had 2 children, and each of these He had 2 children. How many grandchildren did Fernando have?

4 grand children

Step-by-step explanation:

6 grandkids

Step-by-step explanation:

fernando has 2 kids and each had their own sets of kids so

1 fernando's kid     1 fernando's kid

2 grandchildren      2 grandchildren

                           =4 grandchildren in total

you said the grandchildren had kids as well so

2+4=6

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)