How is 45 minus negative 40=85

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.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

What number line represents the solution set for the inequality -1/2 greater than or equal to 4