If the first equation is multiplied by 3 and then the equations are added, the result is

3x + y = 3
x - 3y = -2

a. 10x = 11
b. 10x = 7
c. 8x = 7

The sum of two numbers is 86, and their difference is 20. find the two numbers

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

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.