15. 3. Determine the equation of the plane that contains L : F = [1, 2. 3} + E", 21 1},.1HER1 and point KB. 2. 4}. 1:. Determine the distance from point .5'{]., l, l} to the plane you found in part a. 18. Solve the following system of equations for a, b, and c: 9a 3c - 8b + 4 b b 3a Ac + 4b + = 3 b b 3a 4c + 4b = 3 b b Hint: Let x = my = b, and z =