Fast multiply (2.1 x 103) x (3.5 x 102) 30 points

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

If you answer right ill give brainliest, : )

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103