Can someone help I don't understand how to do this.

At which value in the domain does f(x) =0?

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

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)