The future value of $1,000 invested at 8% compounded semiannually for five years is 
<u>Solution:</u>
----------- equation 1
A = future value
P= principal amount
i = interest rate
n = number of times money is compounded
P = 1000
i = 8 %

(Compounding period for semi annually = 2)

Dividing “i” by compounding period

Solving for future value using equation 1



The second one it's double.
Answer:
I don´t know fully but you add by ones on top and add by threes on the bottom
Step-by-step explanation:
Change the x and y
Then solve for y
X= 8y+1
Subtract 1 from both sides
X-1=8y
Divide by 8
X-1 /8 = y
Do the same thing as the attached image.