Find the rate of change shown in the table

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

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?