Mrs. Cordova drove a distance of 15/4 miles. Which distance is equivalent to 15/4 miles? A. 3 3/4 miles B. 3 1/4 miles C. 1 4/5 miles D. 1 4/11 miles​

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.