7. A seesaw has two seats located at endpoints A(-2,5) and B(8,-13). Use the length of a line formula to show that the point (3,-4) is the middle pivot point of the seesaw.
(5 marks)

Match each expression with its simplified form.

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.

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.