Need help with 19 to 21 please help

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth

Solve for the equation. 4x - 13 = 2x + 9