The density of oxygen is 0.001429 grams per cubic centimeter . how is this number written in scientific notation

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

How do i do this activity, is appreciated

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?