What equation represents the proportional relationship displayed in the table? x: 0, 3, 8, 13 y: 0, 18, 48, 78 enter your answer in the box to complete the equation y= x

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.

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?