Every week, Don plans to save 2 times as much money as he saved during the previous week. He saved $3 during the first week of his savings plan. Which of these may be used to represent Don's total savings? a. an=2⋅3n−1

b. a1=3an=2an−1,n≥1

c. a1=2an=3an−1,n≥1

d. an=3⋅2n−1

step-by-step explanation:

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step-by-step explanation:

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graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.