Why Do the Inequalities $x ^ { 2 } - 4 x - 21 \geq 0$

question 123

Essay

Why do the inequalities $x ^ { 2 } - 4 x - 21 \geq 0$ and $\frac { x - 7 } { x + 3 } \geq 0$ not have the same solution set?

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Definitions:

CPI

This index tracks the overall price changes of a mix of consumer products and services like healthcare, transportation, and food by calculating their weighted average price.

Inflation Rate

A measure reflecting how much prices of goods and services have increased in a given period, reducing the purchasing power of money.

Market Basket

A set combination of goods and services used as a consistent measure to track the cost of living and inflation through price changes over time.

Basket of Goods

A selected group of products whose prices are tracked over time for the purpose of measuring inflation.