Year 1
$12500 x .07 = $875
12500-875=11625
Year 2
11625 x .07 = $813.75
11625-813.75=10811
Year 3
10811 x .07 = $756.79
10811-756.79= 10054.21
Year 4
10054.21 x .07= 703.79
10054.21-703.79= 9350.42
So after 4 years expect to get $9350.42
That is so easy :)
the answer is 24
9 : 2 = 18 : 4
As: 9 x 2 : 2 x 2 = 18 : 4
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36 : 8 = 18 : 4
As: 18 x 2 : 4 x 2 = 36 : 8
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72 : 16 = 18 : 4
As: 18 x 4 : 4 x 4 = 72 : 16
5x + 4y = 8
-5x + 3y = -1
Let's add both equations, to eliminate x.
5x + 4y - 5x + 3y = 8 - 1
7y = 7
y = 1
Let us substitute this value of y in equation 1, so we can find x.
5x + 4 = 8
5x = 4
x = 4/5