7x+9
5x+2x= 7x
5+4=9
7x + 9 is the result when combining like terms.
The answer is C because it is telling you to subtract 180 degrees from 54 degrees to get the final answer which is 126 I got that because 54 is that angle and it is asking for the whole amount so it would be C
Area of base
So possible dimensions are optionB given
Verified
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