Can't see it the equation is to blurry.
from x15 to x 25 is 4 - -16 = -20 degree change
25 -15 = 10000 feet
-20/10 = -2 degrees every 1000 feet
A.50*9.8
B.50*1.6
C.45.359237
D.45.3*1.6
The sum is 45577788999000866;33sorry
The answer is: [C]: " (x - 4) " .
____________________________________________________
" (x+9)(x-4) = x² - 4x + 9x - 36 = x² + 5x - 36 " .
____________________________________________________
