Answer: C. [tex]\dfrac{264\text{ feet}}{\text{ minute}}[/tex]
Step-by-step explanation:
We know that 1 mile = 5280 feet
and 1 hour = 60 minutes.
Given : A track runner was timed at 3 miles per hour.
By using UNITARY METHOD, To convert miles per hour into feet per minute , we multiply it by 5280 and divide it by 60 , we get
[tex]3\text{ miles per hour}=\dfrac{3\text{ miles}}{1\text{ hour}}\\\\=\dfrac{3\times5280\text{ feet}}{60\text{ minute}}\\\\=\dfrac{264\text{ feet}}{\text{ minute}}[/tex]
Hence, they run [tex]\dfrac{264\text{ feet}}{\text{ minute}}[/tex].
