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Roman55 [17]
2 years ago
8

What is the answer? please be detailed as possible I need this done asap

Mathematics
1 answer:
insens350 [35]2 years ago
3 0

Answer:

a7=36

Step-by-step explanation:

a1=12

a2=a1+4=16

a3=a2+4=20

an=4×(n+2)

a7=4×(7+2)=4×9

a7=36

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A book sold 31,100 copies in its first month of release. Suppose this represents 7.8% of the number of copies sold to date. How
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