1. Sophia is trying to save money for the new Iphone 12. She is currently has $50 in her savings account and plans on adding $25 a month to that same account. She needs exactly $1600 to buy the new phone.
50x+25=1600
50+25x=1600
1600+25x=50
25+1600x=50

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.