Alexa lives 4 kilometers away from school.
Distance between Alexa house and school = 4km
She leaves home and rides her bicycle toward school at a speed of 0.25 kilometer per minute
Speed of Alexa = 0.25km/min
The relation between speed, distance and time is express as:
[tex]\text{Speed}=\frac{Dis\tan ce}{Time}[/tex]Let time = x minutes
Substitute the value, time = x, Distance = f(x), speed = 0.25km/min
[tex]\begin{gathered} \text{Speed}=\frac{Dis\tan ce}{Time} \\ 0.25=\frac{f(x)}{x} \\ f(x)\text{ = 0.25x} \end{gathered}[/tex]Answer: f(x) = 0.25x
