The answer is a because if you divide 1000 by 2 you get 500 and the other ones you get a decimal.
The answer is 90 I think I multiplied 6*3 =18 *4 =72( for every rectangle )then 3*3 =9 for the square (2 squares ) 9*2=18
-5.9, -5 7/8, 5.78 because negative is less than zero and 7/8= .850 :)
