What is the significance of the ishango bone?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Which expression is equivalent to -12(3x-3/4)

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.