3. Solve x^7 - 11x^6 +48X^5 - 120x^4 + 225x^3 - 243x^2 - 162X + 486 = 0. (1 point) -x=-1, x = +61, x = 3 with multiplicity 4
-x=-1 with multiplicity 5, x = 3 with multiplicity 2
-x = -1, x = + v6i, x = 3 with multiplicity 4
-x = -1 with multiplicity 3, x = V6, X = 3 with multiplicity 2

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.