Plz me i dont even know how to start this can u also explain how to do it much appretciated

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

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.

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?