What is the The sum of x and 8? i need to know for a test

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

Which of the following expressions is equal to 2x^2+8

Percent increase and decrease. original number: 45 new number: 18