1x1=? I have no clue and im 13

What is (28 + 7 + 6 + 3) x 1/2 show your work

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost