X + y = 1.....multiply by -2
2x - 3y = -30
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-2x - 2y = -2 (result of multiplying by -2)
2x - 3y = -30
----------------add
-5y = -32
y = -32/-5
y = 32/5 or 6.4 <===
(1/2) ^2 = 1/2 * 1/2 = 1/4
1/4 < 1/2
The answer is b because 7 plus 2 equals 9 and a equals whole amount then his current amount is A-9
