Answer:
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Step-by-step explanation:

Answer:
5
Step-by-step explanation:
We need to construct the system of equations in order to solve that problem. Let's denote one-time membership fee with x and monthly fee with y. Then we can write that John paid x+6y=325 and Abigail paid x+9y=475. Solving the system of equations

, we find that x=25 and y=50. The monthly fee is 50 dollars.
Answer:
D (3)
Step-by-step explanation:
100 is 3 off from 103
104 is 1 off from 103
107 is 4 off from 103
3+3+3+1+4+4=18
18/6 = 3
(there are six total values)