Add all of the interior angles to 1260. Then you simplify for x. After that you plug in what you found for X in the E expression.
Answer:
D. 4.5 kg
Step-by-step explanation:
Answer:
d = 
Step-by-step explanation:

Answer:
your answer should be 1.5
Step-by-step explanation:
Answer:
$1890
Step-by-step explanation:
x= couches
y=chair.
x=2y
2x=3y+270
2(2y) or 4y=3y+270
y=270
x=540
2(540)+3(270)=1890.
Hope this helps :D