I don’t get this need help ASAP

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Find x to the nearest hundredth place

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