All of the following expressions simplify to -5x + 7, except ( x - 2) - (6 x - 9)
(5 x + 1) - (-10 x + 6)
-4 x + 2 x + 7 - 3 x
(4 x + 3) + (-9 x + 4)

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

Which statements about these triangles is true