Answer:
-9
Step-by-step explanation:
-b+5=-4+4b-6b
5+4=4b-6b+b
9=-b
divide both side by -1
therefore b=-9
Answer: a= 1 b=-8 c=15
Step-by-step explanation:
A is the number before 
B is the number (including the sign) before X
c is the number without a variable
Answer:
The distance between the two should be -7
Step-by-step explanation:
Since you have to use d =

Answer:
3.5= x
Step-by-step explanation:
Answer:
The explicit function is:

where

and we calculate S12:

Step-by-step explanation:
Expanding a few steps of the compound interest:

We can write:

for deposits
Then, expanding the previous equations would yield:

This is a geometric series form, which can be simplified to:

plugin in the values for the 12 month gives:
