I need help in algebra :(

63 = y x 9

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

What is the inverse of the function f(x) = 2x + 1?

Select all of the following expressions that are equal to 2.5.