Answer:
=
Step-by-step explanation:

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An equation would be y=-1x-1!
I hope this helped! Brainliest? :) -Raven❤️
Answer:
The expression you are looking for is: 18+x
Step-by-step explanation:
Answer:
546
Step-by-step explanation:
Surface Area = 2(lw + lh + wh)
plug in 21 10.5 and 2.5