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# 9.15: Pedal Power Extra for Experts

Difficulty Level: At Grade Created by: CK-12

Extra for Experts: Pedal Power – Write Functions Rules from Graphs and Tables

Solutions:

Extra for Experts, Pedal Power: 1

Time (Number of hours) Jefferson Distance (Number of miles) Richards Distance (Number of miles)
0 0 0
1 6 0
2 12 0
3 18 18
4 24 36
5 30 54

Jefferson: D=6t\begin{align*}D = 6t\end{align*}

Richards: D=18(t2)\begin{align*}D = 18(t - 2)\end{align*}

Extra for Experts, Pedal Power: 2

Time (Number of hours) Prentiss Distance (Number of miles) Jerome Distance (Number of miles)
0 0 0
1 0 8
2 0 16
3 16 24
4 32 32
5 48 40

Prentiss: D=16(t2)\begin{align*}D = 16(t - 2)\end{align*}

Richards: D=8t\begin{align*}D = 8t\end{align*}

Extra for Experts: Pedal Power 1 – Write Functions Rules from Graphs and Tables

Fact: Jefferson biked one-third Richards speed. Jefferson left 2 hours before Richards.

Use the Fact and the graph. Complete the table for each biker showing distance traveled. Write a function to show the relationship between number of miles traveled (D)\begin{align*}(D)\end{align*} and number of hours (t)\begin{align*}(t)\end{align*} traveled for each biker.

Extra for Experts: Pedal Power 2 – Write Functions Rules from Graphs and Tables

Fact: Prentiss biked twice as fast as Jerome and left 2 hours after Jerome.

Use the Fact and the graph. Complete the table for each biker showing distance traveled. Write a function to show the relationship between number of miles traveled (D)\begin{align*}(D)\end{align*} and number of hours (t)\begin{align*}(t)\end{align*} traveled for each biker.

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Date Created:
Feb 23, 2012