75+ points for best 2 answers!

1. points ρ(6, 0, 4), q(3, 2, 1), and r are collinear such that pq = qr.

what are the coordinates of point r?

a. (1, -2, 0)

b. (4, 1, -3)

c. (0, 4, -2)

d. (-3, 2, -3)

2. what is the longest stick that can be placed in a box 16 cm long, 20 cm wide, and 60 cm high?

(this confused me at first because i thought the stick was being placed horizontally. i don't know for sure but i think they meant vertically, so my guess below.)

a. 60 cm < guess

b. 65 cm

c. 72 cm

d. 69 cm