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

question 496

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.
-The amount of sales tax paid as a function of the sales price.

• A) quadratic; negative
• B) linear; positive
• C) linear; negative
• D) quadratic; positive

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Definitions:

Pediment

In classical architecture, the triangular space (gable) at the end of a building, formed by the ends of the sloping roof above the colonnade; also, an ornamental feature having this shape.

Ficoroni Cista

An ancient Etruscan bronze container, named after Francesco de' Ficoroni who discovered it in the 18th century, used for holding personal items.

Mythical Scenes

Artistic or literary depictions of events, characters, and stories from mythology.

Argonauts

In Greek mythology, the band of heroes who accompanied Jason on his quest to find the Golden Fleece.