12 = 1\2 (3+x) ×3 solve it please

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

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.

Match the one-to-one functions with their inverse functions.