Express 4 250 000 000 000 in standard form

What is the common difference in the following arithmetic sequence? 7,3,-1,-5

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?