Answer:
The Distributive Property
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If you are asking if (2,14) would be a point on the line, it would not because:
14≠5*2+10
Hope this helps :)
Step 1: Find X
3x + 7 + 9x + 17
Add the alike terms: 12x + 24
Linear is 180 degree, 12x + 24 = 180; now find x
X = 13
Now find the degree for both.
RST: 3 (13) + 7 = 46
VST: 9 (13) + 17 = 134
You're answer is A