Find the greatest common factor 15y^2 and 6b^3

What is the value of x in the following equation. -x ^3/2 = -27

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?