Solve the Quadratic Inequality $$x ^ { 2 } - 3 x - 28 \leq 0$$

question 326

Multiple Choice

Solve the quadratic inequality. Write the solution set in interval notation.
- $$x ^ { 2 } - 3 x - 28 \leq 0$$

• A) \([ 7 , \infty )\)
• B) \(( - \infty , - 4 ] \cup [ 7 , \infty )\)
• C) \(( - \infty , - 4 ]\)
• D) \([ - 4,7 ]\)

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Definitions:

Price Inelastic

A situation where the demand for a good or service does not change significantly when its price changes.

Negative Cross Elasticity

A situation where the demand for one product decreases as the price of another product decreases, indicating complementary goods.

Income Inelastic

Describes a good or service whose demand does not significantly change with a change in consumers' income.