Answer:
This answer has been deleted by the user.
Step-by-step explanation:
Answer:
y=1472/3
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
x - y² = -1 ⇒ - y² = - x - 1 ⇒ y² = x + 1 {x≥-1}
4x² + 9y² = 72
4x² + 9(x + 1)² = 72
4x² + 9(x² + 2x + 1) = 72
4x² + 9x² + 18x + 9 - 72 = 0
13x² + 18x - 63 = 0 ⇒ a = 13, b = 18, c = -63

Answer:
Lana is saving at the greater rate.