What is the value of ( 60 + 40 )

The table above shows approximate conversions from gallons to liters. what is the value of x?

Sole the equation 6n + 9 = -3n - 21 - 6 for n

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.