## Your Turn

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## Check Your Understanding

3.

A rectangle whose length divided by the width is approximately equal to $\mathit{\varphi}$ or 1.618.

4.

$1\phantom{\rule{thinmathspace}{0ex}}\mathrm{k}\mathrm{W}=\mathrm{1,000}\phantom{\rule{thinmathspace}{0ex}}\mathrm{w}\mathrm{a}\mathrm{t}\mathrm{t}\mathrm{s}$

9.

b
Research on coronavirus vaccines began approximately 10 years before the COVID-19 pandemic hit the world.

10.

Mathematical modeling is a graphical representation of a behavior, such as exposure to a virus. It can be helpful in mapping contract tracing with virus exposure during a pandemic.

18.

Data analytics is used in sports to analyze data on team’s players, potential recruits, opposing teams, and opposing players. This helps to find patterns and make predictions for future results.