What is the quotient of the two decimal numbers? 6.4×10121.6×103 =

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge