Solve the Inequality $| 7 x + 6 | \geq 7$

question 32

Multiple Choice

Solve the inequality. Write the answer in interval notation.
- $| 7 x + 6 | \geq 7$

• A) \(\left[ - \frac { 13 } { 7 } , \frac { 1 } { 7 } \right]\)
• B) \(\left[ \frac { 1 } { 7 } , \infty \right)\)
• C) \(\left( - \frac { 13 } { 7 } , \frac { 1 } { 7 } \right)\)
• D) \(\left( - \infty , - \frac { 13 } { 7 } \right] \cup \left[ \frac { 1 } { 7 } , \infty \right)\)

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Definitions:

Voltage-Sensitive

Voltage-sensitive refers to the property of a molecule, ion channel, or membrane to respond to changes in electrical potential or voltage across it.

Sodium Channels

Ion channels found in the membranes of cells, allowing for the passage of sodium ions, important in the generation and conduction of action potentials in neurons and muscle cells.

Cell Membrane

A partial-permeable barrier encasing the cell's cytoplasm, regulating the movement of materials into and from the cell.

Axons

are long, slender projections of nerve cells (neurons) that transmit electrical impulses away from the neuron’s cell body.