Describe a real-world situation in which you might use the expression 50+2x

Which matrix multiplication is possible?

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

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x