If a laptop computer regularly costs $979 and is on sale for $679, what percentage discount is being given? Round your answer to
the nearest hundredth when necessary. 
2 answers:
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Answer: The vectors are linearly dependent.
The solution is in the attachment
Let June's age be
Then his father is
The sum of their ages is no less than 77 means,
The youngest age June can be is 11
Then his father is
The sum of their ages is no less than 77 means,
The youngest age June can be is 11