Use a Graphing Calculator to Plot the Data and Find

question 187

Multiple Choice

Use a graphing calculator to plot the data and find the quadratic function of best fit.
-The number of housing starts in one beachside community remained fairly level until 1992 and then began to increase. The following data shows the number of housing starts since 1992 (x = 1) . Use a graphing calculator to
Plot a scatter diagram. What is the quadratic function of best fit? $\begin{array}{l|l}\text { Year, x } & \text { Housing Starts, H } \\\hline 1 & 200 \\2 & 210 \\3 & 230 \\4 & 240 \\5 & 250 \\6 & 230 \\7 & 215 \\8 & 208\end{array}$

• A) \(\mathrm { H } ( \mathrm { x } ) = - 3.268 \mathrm { x } ^ { 2 } - 30.494 \mathrm { x } + 168.982\)
• B) \(\mathrm { H } ( \mathrm { x } ) = - 3.268 \mathrm { x } ^ { 2 } + 30.494 \mathrm { x } - 168.982\)
• C) \(\mathrm { H } ( \mathrm { x } ) = 3.268 \mathrm { x } ^ { 2 } + 30.494 \mathrm { x } + 168.982\)
• D) \(\mathrm { H } ( \mathrm { x } ) = - 3.268 \mathrm { x } ^ { 2 } + 30.494 \mathrm { x } + 168.982\)

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Definitions:

Margins

The difference between the selling price of a good or service and its cost of production, often expressed as a percentage of the selling price, indicative of profitability.

Company Owned Store

A retail establishment directly controlled and operated by the corporation that owns the brand, as opposed to a franchise.

Manager

An individual responsible for controlling or administering all or part of a company or similar organization.

Sharing Contracts

Agreements that involve distribution of profits or losses among parties based on pre-determined criteria.