Solve $| 7 x - 9 |$ ?-3
A) $\left( - \infty , \frac { 6 } { 7 } \right]$

question 132

Multiple Choice

Solve: $| 7 x - 9 |$ ?-3

• A) \(\left( - \infty , \frac { 6 } { 7 } \right]\)
• B) \(\left[ \frac { 6 } { 7 } , \frac { 12 } { 7 } \right]\)
• C) \(( - \infty , \infty )\)
• D) \(\varnothing\)

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Definitions:

Palmitic Acid

A saturated fatty acid found in fats and waxes including olive oil, palm oil, and body lipids, used in the production of soaps and cosmetics.

Octadecanal

An organic compound belonging to the aldehyde group with an 18-carbon chain.

Stearic Acid

A saturated fatty acid commonly found in animal and vegetable fats, used in various manufacturing processes.

Saponification

A chemical reaction involving the hydrolysis of esters in fats with alkali, resulting in the formation of soap and glycerol.