Tell Whether a Linear Model or a Quadratic Model Is $x ^ { 2 }$

question 359

Multiple Choice

Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be
positive or negative. If quadratic, decide whether the leading coefficient a of $x ^ { 2 }$ should be positive or negative.
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• A) linear; positive
• B) linear; negative
• C) quadratic; positive
• D) quadratic; negative

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Definitions:

Aerobic Respiration

A process of producing cellular energy involving oxygen; cells break down food into water and carbon dioxide, releasing energy.

Microbe

A microscopic organism, such as bacteria, viruses, fungi, and protozoa, which can be beneficial or harmful.

Archaea

A domain of single-celled microorganisms distinct from bacteria and eukaryotes, often found in extreme environments.

Heterotrophs

Organisms that obtain their energy (nutrition) from consuming other organisms, as they cannot produce it internally.