9. Solve d²x dt² + 4x + 5y = 1²; d²y dt² + 5x + 4y = t +1.

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Q: 8. If sugar costs $2.87 for 80 ounces, what is the cost per ounce, rounded to the nearest cent?

A: Cost for 80 ounces is $2.87

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Q: Problem 2. Determine if b= 665 ----- -[1] = is a linear combination of a₁ = 216

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