Step-by-step explanation:
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3-x15 ?? Or 3-x+15 I’m not so sure I’m really bad at this but I really want to try to help I’m sorry if u got it wrong it would be my fault sorry
5n=30+3n You need to exclude the 4 due to for the first 4GB cost $30 then $3 for each additional GB used
Answer:
The rule is "add 5, add 10, add 20" and the rule keeps doubling.
