Answer:
![5.26(m)/(s)](https://img.qammunity.org/2020/formulas/mathematics/college/ih8i4198bjajhk0kaddlwpelqk25wl0bns.png)
Explanation:
We need to know the total time in seconds, then converting the 4 minutes to seconds:
![4\,min(60\,s)/(1\,min)=240\,s](https://img.qammunity.org/2020/formulas/mathematics/college/w1a8yx0ss7zb68n14652yuqlnqgzl3p6wv.png)
Now adding both quantities in seconds:
![240\,s+45\,s=285\,s](https://img.qammunity.org/2020/formulas/mathematics/college/42wylv2apjn9af6lm4rrqctxp34clru89e.png)
To find the unit rate we just need to divide the distance that Joel ran by the total time in seconds, then:
![(1500\,m)/(285\,s)=5.26(m)/(s)](https://img.qammunity.org/2020/formulas/mathematics/college/di45l2d8kb929yjwh0d3shjnqawpzhpszr.png)
Then each second Joer ran 5.26 meters.