Suppose the IQ Scores $( y$ , Rounded to the Nearest $10 )$

question 24

Multiple Choice

Suppose the IQ scores $( y$ , rounded to the nearest $10 )$ for a group of people are summarized in the table below. Use the regression feature of a graphing utility to find a quadratic function of the form $y = a x ^ { 2 } + b x + c$ for the data.
$\begin{array}{|c|c|}\hline \text { IQ Score } & \text { Number of People } \\\boldsymbol{y} & \boldsymbol{x} \\\hline 70 & 50 \\\hline 80 & 76 \\\hline 90 & 89 \\\hline 100 & 93 \\\hline 110 & 74 \\\hline 120 & 53 \\\hline 130 & 16 \\\hline\end{array}$

• A) \(y = - 0.04 x ^ { 2 } + 15.08 x - 411.58\)
• B) \(y = - 0.06 x ^ { 2 } + 12.06 x - 484.21\)
• C) \(y = - 0.08 x ^ { 2 } + 10.98 x - 508.43\)
• D) \(y = - 0.07 x ^ { 2 } + 13.63 x - 460\)
• E) \(y = - 0.09 x ^ { 2 } + 8.56 x - 556.85\)

---

Definitions:

Trophic Category

The classification of organisms based on their feeding position in the ecosystem, ranging from producers to various levels of consumers.

Carnivore

An organism that primarily eats other animals or the flesh of animals as its main food source.

Salmon

A species of fish known for their anadromous life cycle, migrating from ocean habitats to freshwater to spawn.

Bear

A large mammal belonging to the family Ursidae, known for its thick fur and large body, with species spread across the northern hemisphere.