Answer:
720 words
Step-by-step explanation:
There are 6 letters in the word SURVEY and no repeat letters. There are 6 choices for the first letter, 5 for the second and so on until we have 2 choices for the last letter so the answer is 6 * 5 * 4 * 3 * 2 = 720.
They collected 50 pound of pieces that could be categorized as paper because 1/5 of 250 is 59.
(-2x-1)-(x-7)
-2x-x+7-1
-3x+6
-3x=-6
x=2