With one ! amy can ride her bike 4 miles in 30 minutes. sebastian can ride his bike 3 miles in 24 minutes. at her 24current rate, what is the distance, in miles, amy can ride her bike in 12 minutes? (a) 1.6(b) 2.5(c) 3.0(d) 9.0 sally drives 66 miles in 3 hours and molly drives 72 miles in 4 hours. what is the difference between 23their average speeds, in miles per hour? (a) 4(b) 6(c) 18(d) 22

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.