Answer:
Step-by-step explanation:
Percy is not correct because he applied the zero product property to a factored expression that was not equal to 0. He should have subtracted 12 from both sides to get x2 + 7x = 0 before factoring. The correct solutions are 0 and -7.
32 years old
Please see attached picture for full solution.
Let Sunil's present age be 4x and his wife's present age be 3x.
x = -1
3^x = 1/3
3^x= 3^-1
x=-1
63 a's
count it with a pen
400
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c
