A person standing on a moving walkway travels 80 feet in 40 seconds. What equation represents this relationship? How many feet will the person travel in 10 seconds? A. y = 4x;40 feet
B. y = 2x;20 feet
C. y = ½x;5 feet
D. y = 2x;2 feet

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.