20. Find an equation for the plane parallel to 3x − 3y + 2x = 5 and through the point (4, 3, 5). 21. Find an equation for the plane orthogonal to the line x(t) = (2 + t, 3 − 2t, 1 − t) and through (1, 0, −3).

20. I suppose you meant to write ? This plane has normal vector (3, -3, 2), so the equation of the plane parallel to this one that goes through (4, 3, 5) is

21. The tangent to is parallel to the normal vector to the plane, so we can simply use it as the normal vector. This tangent vector is

Then the plane has equation

1 (12) is the correct answer

Step-by-step explanation:

The interquartile range is the range governed by the entire box area in the box and whisker plot. This box goes from 68 to 80, which is 12.