Find the Domain and Range of the Function $f ( x ) = x ^ { 2 } + 2 x - 4$

question 422

Multiple Choice

Find the domain and range of the function.
$f ( x ) = x ^ { 2 } + 2 x - 4$

• A) \(\text { Domain: } ( - \infty , \infty ) \text {; Range: } [ - 5 , \infty )\)
• B) \(\text { Domain: } ( - \infty , \infty ) \text {; Range: } [ - 1 , \infty )\)
• C) \(\text { Domain: } [ - 5 , \infty ) \text {; Range: } ( - \infty , - 1 ]\)
• D) \(\text { Domain: } [ - 5 , \infty ) \text {; Range: } ( - \infty , 0 ]\)

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Definitions:

Elaborative Rehearsal

Using working memory processes to think about how new information relates to yourself or your prior knowledge (semantic information); provides deeper encoding of information for more successful long-term storage.

Dual Coding

A theory suggesting that information is stored in both verbal and visual forms to facilitate memory retention.

Working Memory

A cognitive system responsible for temporarily holding information available for processing and manipulation.

Chunking

Using working memory to organize information into meaningful units to make it easier to remember.