To solve for the proportion of suburban park users who bike on the park trail, we follow these steps:
1. Identify the total number of users in the suburban park:
According to the data provided, the total number of users in the suburban park is 243.
2. Identify the number of users in the suburban park who bike:
From the table, the number of suburban park users who bike is 42.
3. Calculate the proportion of suburban park users who bike:
To find this proportion, divide the number of suburban park users who bike by the total number of users in the suburban park.
[tex]\[
\text{Proportion of suburban park users who bike} = \frac{\text{Number of suburban bikers}}{\text{Total number of suburban users}} = \frac{42}{243}
\][/tex]
4. Simplify the fraction:
When you perform the division:
[tex]\[
\frac{42}{243} \approx 0.1728
\][/tex]
Thus, the proportion of suburban park users who bike on the trail is approximately 0.1728.
Given the multiple-choice options, the correct answer is:
[tex]\[
\boxed{0.1728}
\][/tex]
