G ( x ) = 2 - ( x - 7 )² g ( x ) = 2 - ( x² - 14 x + 49 ) g ( x ) = 2 - x² + 14 x - 49 g ( x ) = - x² + 14 x - 47 The maximum of the function is at: x= - b / 2 a x = - 14 / ( - 2 ) = 7 Therefore the function is increasing form x ∈ ( - ∞, 7 ) and decreasing for x ∈ ( 7, +∞ ). Answer: C. increasing, x < 7; decreasing x > 7.