Use substitution to determine a which value is the solution to -8x+9=49

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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

Landon wrote that 3−2.6=4. which statement about his answer is true?