If y varies directly as x, and y is 400 when x is n and y is n when x is 4, what is the value of n?
1 answer:
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Answer:
we conclude that:
Hence, (1, 5) is the solution in interval notation.
Please also check the attached graph.
Step-by-step explanation:
Given the inequality expression
as
(x + 3)² = x² + 6x + 9
2(x² + 7) = 2x² + 14
so
rewriting in the standard form
Factor -x² + 6x - 5: - (x - 1) (x - 5)
Multiply both sides by -1 (reverse the inequality)
Simplify
so
Therefore, we conclude that:
Hence, (1, 5) is the solution in interval notation.
Please also check the attached graph.
