Which expression makes the equation true? 1.) y^20 = ( )^2 a.) y^4 b.) y^5 c.) y^10 d.) y^12 2.) 100m^20 = ( )^2 a.) 10m^20 b.) 10m^10 c.) 50m^10 d.) 50m^20

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.