Beto has $12 to put gas in his car. if gas costs 3.75 per gallon, which ordered pair relating number of gallons gas, x, to the total cost of gas, y, includes the greatest amount of gas berto can buy?

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.