What is the absolute value of -4/5,1/2,0.2,and -0.5

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?