I need help with 3 questions. Please, help me, and thank you!

Previous Problem Problem List Next Problem (1 point) Let A = (-2, -5, 4), B - (2, -3, 1), and P - (k, k, k) The vector from A to B is perpendicular to the vector from A to P when k =(1 point) Find the scalar and vector projections of b onto a, where a = (-1, 1, 2) and b = (-1, 5, 15). 1. comp, b = 2. proj, b =(1 point) Find the scalar and vector projections of b onto a, where a - (1, 2) and b = (-10, 3) 1. comp. b 2. proj, b