77.94 - 77.94 + 42.09 = 42.09
that's correct?
Two pairs because a square has 4 sides
The approximate value of q in the equation is 
The equation is given as:

Divide both sides of the equation by
.
So, we have:

Determine log(6) base 2

Divide 2 by 2.585

Hence, the approximate value of q in the equation is 
Read more about logarithmic equations at:
brainly.com/question/11897620
Withdrawal because they are taking money out of bank. A deposit would be if they were putting money back in.