Answer: It would be 8+4z because you can't add a variable.
Answer: 
which is choice C
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Explanation:
This is a 30-60-90 triangle. The short leg is 5, as it's opposite the smallest angle. The long leg is 
times that of the short leg.
D(x)=1375-110x
when it reaches 0 it has reached destination
0=1375-110x
add 110x to both sides
110x=1375
divide both sides by 110
x=12.5
answer is 12.5 hour
Volume prism= ½•a•c•h
=½•7•11•5
=½•385
=192.5cm³
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The correct answer would be C. Hope this helps=)
