$2 x ^ { 3 } + 9 x ^ { 2 } - 27 x - 54 > 0$

question 143

Multiple Choice

$2 x ^ { 3 } + 9 x ^ { 2 } - 27 x - 54 > 0$

• A) \(x \leq - 6 \text { or } - \frac { 3 } { 2 } \leq x \leq 3\)
• B) \(x < - 6 \text { or } - \frac { 3 } { 2 } < x < 3\)
• C) \(- 6 \leq x \leq - \frac { 3 } { 2 } \text { or } x \geq 3\)
• D) \(- 6 < x < - \frac { 3 } { 2 } \text { or } x > 3\)

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Definitions:

Amphipathic

A molecule having both hydrophilic (water-loving) and hydrophobic (water-repelling) parts.

Phospholipids

A class of lipids that are a major component of all cell membranes, consisting of two fatty acids, a phosphate group, and a glycerol molecule.

Fatty Acids

Long chains of hydrocarbon molecules with a carboxylic acid group, which are components of lipids and play roles in energy storage and cellular structure.

Potassium Ion

A positively charged ion (K+) essential for various biological processes, including nerve transmission and muscle contraction.