If a, b,c and d represent four different positive integers such as a^2 + d^2 = b^2 + c^2, what is the least possible value of |d-a|?

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.

Ineed with math stuff it involves graphs

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two