1. The cubic equation f(x)= x + 3x? – 9x – 27 is decreasing on which interval(s)? 1. (-00,-3) and (1,0)
3. (-0,0) and (- 32,0)
2. (0,- 32)
4. (0,1)

What is the measure of angle afe? 79 81 91 99

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

X+ 4y − z = −14 5x + 6y + 3z = 4 −2x + 7y + 2z = −17