The weight varies directly with the number of boxes, so this means every box weighs the same amount.
Find the weight of a box by dividing the known weight by the number of boxes:
600 pounds / 16 boxes = 37.5 pounds per box.
Now multiply the weight per box by the number of boxes:
37.5 pounds x 12 boxes = 450 pounds
12 boxes weigh 450 pounds
D E E Z N U T Z ↘↘↘↘↘↘↘↘↘↘↘↘↘
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X+8/4-x+5/4
The first term in the series is a positive "x", and the third one is a "-x". Since these are opposites, they cancel out
x+8/4-x+5/4
8/4+5/4
13/4
4 1/4
A. 10g4h9
-5gh4(-2g3h5)
(-5 x -2)= 10
(g x g3)=g4
(h4 x h5)= h9
= 10g4h9