K/2+9=30 1. Start by getting rid of the number farthest from K
-9 -9 2. The nines cancel out, 30-9=21
K/2 = 21 3. Next, get the 2 away from K
/-2 /-2 4. The 2 cancel out when divided, 21 divided by -2= -10.5
K = -10.5
K=-10.5
First, multiply both sides by m:
s*m = w - 10e
Then add 10e to both sides to isolate w:
s*m + 10e = w
or
w = s*m + 10e
is 
so it should be between 0 and 1 but a little bit closer to 1.
Answer: 1.03% Explanation: Divide the amount of money after 1 year by his original investment.
