Key word: sum
twice a number = 2n
Sum of that and 15 = 2n + 15
is = equals
Answer: 2n + 15 = 9
Answer:

Step-by-step explanation:
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Answer:

Step-by-step explanation:
1÷3
=3+
, 3×
1÷
Slope=y2-y1/x2-x1
(18-16)/(8-3)=2/5
So the slope is 2/5.