what does x & y equal if y=1/2x + 7 and y=x-8?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

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.