Answer:
I think that removing (1, 3) would make the most sense
Answer:
x is 4
Step-by-step explanation:
21x+6 = 90
21x=84
x=4
Answer: x= -3
Step-by-step explanation: First you add 4.2x to both sides to get: 1.8+0.5x= 0.3. Then you subtract 1.8 from both sides and get: 0.5x=-1.5. Lastly, you divide by 0.5 both sides and get x=-3
Is that a test or just regular homework? If it is a test I can't help you.