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Jeremy looked at this table of prices and said the cost for renting a bike is [tex]$\$[/tex] 7.00[tex]$ per hour.
\begin{tabular}{|l|c|c|c|}
\hline Hours & 2 & 4 & 6 \\
\hline Cost $[/tex](\[tex]$)$[/tex] & 14.00 & 28.00 & 42.00 \\
\hline
\end{tabular}

What mistake may Jeremy have made? Explain.


Sagot :

Let's analyze the information in the table carefully in order to understand how the costs are structured:

[tex]\[ \begin{tabular}{|l|c|c|c|} \hline \text{Hours} & 2 & 4 & 6 \\ \hline \text{Cost (\$)} & 7.00 & 14.00 & 21.00 \\ \hline \end{tabular} \][/tex]

Jeremy claimed that the cost for renting a bike is [tex]$7.00 per hour. However, let's break down the costs for different hours to check the correctness of his interpretation. 1. Cost for 2 Hours: - The cost is $[/tex]7.00 for 2 hours.
- Therefore, the cost per hour can be calculated as:
[tex]\[ \frac{7.00}{2} = 3.5 \text{ dollars per hour} \][/tex]

2. Cost for 4 Hours:
- The cost is [tex]$14.00 for 4 hours. - Therefore, the cost per hour can be calculated as: \[ \frac{14.00}{4} = 3.5 \text{ dollars per hour} \] 3. Cost for 6 Hours: - The cost is $[/tex]21.00 for 6 hours.
- Therefore, the cost per hour can be calculated as:
[tex]\[ \frac{21.00}{6} = 3.5 \text{ dollars per hour} \][/tex]

From these calculations, we observe that for each set of hours, the cost per hour is consistently [tex]$3.5. This means that the cost per hour is actually \$[/tex]3.50, not \[tex]$7.00 as Jeremy initially thought. Mistake Jeremy Made: Jeremy likely misinterpreted the table, assuming that the total cost given for 2 hours (i.e., $[/tex]7.00) meant [tex]$7.00 per hour instead of checking the linear relationship between hours and total cost. Thus, the correct interpretation is that the bike rental costs $[/tex]3.50 per hour, not $7.00 per hour.