How do you write these numbers in standard and expanded form?

Find the given elements if matrix d:

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.