Round 8,031,426,100. Write the result as the product of a single digit and a power of 10.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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