The accompanying data were compiled by the superintendent of schools in a large metropolitan area. the table shows the average sat verbal scores of high school seniors during the 5 years since the district implemented its "back to basics" program.
year, x 1 2 3 4 5
average score, y 436 434 436 428 424
(a) determine the equation of the least-squares line for these data.
y =

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.