Use a CAS to Plot the Function near the Point $$\lim _ { x \rightarrow 8 } \frac { x ^ { 2 } - 9 } { \sqrt { x ^ { 2 } + 7 } - 4 }$$

question 291

Multiple Choice

Use a CAS to plot the function near the point x0 being approached. From your plot guess the value of the limit.
- $$\lim _ { x \rightarrow 8 } \frac { x ^ { 2 } - 9 } { \sqrt { x ^ { 2 } + 7 } - 4 }$$

• A) 3
• B) 4
• C) 8
• D) \(\frac { 1 } { 4 }\)

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Definitions:

Lethal Dosage

A measure of the amount of a substance required to cause death in a target organism or population.

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A chemical compound known as table salt, widely used in food seasoning and preservation, consisting of sodium and chloride ions.

Common Compounds

Chemical substances made up of atoms of two or more different elements, which are widely found or used in daily life.

Acute Poisoning

A sudden and severe exposure to a toxic substance causing harmful effects.