Answer:
A. 2
Step-by-step explanation:
4 to 6 to 8 to 10 to 12
(3, 60) (5, 100) (8, 160) (9, 180) (12, 240)
Answer: 2
3x+4y=10
3x+4(x-1)=10
3x+4x-4=10
7x-4=10
Add 4 to both sides
7x=14
x=2
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