George can run 10 laps around the track in 25 minutes. Write an equation to represent the relationship between x laps and y minutes

Y= 5/2x
Y= x + 2/5
Y= 2/5x
Y= x + 5/2

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.