Which expressions show how 8 • 54 can be rewritten using the distributive property? choose all answers that are correct. a. 8 • 50 + 4 b. 8 • 50 + 8 • 4 c. 8 • 60 – 8 • 6 d. 8 • 60 + 8 • 4

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.