Asmall fair changes an admission fee for children and adults. the cost for admission is $3 per adult and $2 per child. on a certain day, total sales were $900, and 350 people attended the fair. how many children attended the fair that day?

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.