Sagot :
Answer:
[tex]y^{2}-3y+1[/tex] (km/hr)
Step-by-step explanation:
speed = [tex]\frac{distance}{time}[/tex]
speed = [tex]\frac{(2y^{3} - 7y^{2} + 5y - 1) }{2y-1}[/tex]
speed = [tex]\frac{(2y-1)(y^{2}-3y+1) }{2y-1}[/tex]
speed = [tex]y^{2}-3y+1[/tex] (km/hr)