Write this number in expanded form 73,489

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?