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

What are the sotions to the quadratic equation 9x^2=4

Zroms according to the synthetic division below, which of the following statements are true? check all that apply. 352 -2 6 -12 12 2 4 0 i a. (x-3) is a factor of 2x2 - 2x - 12. b. the number 3 is a root of f(x) = 2x2 - 2x - 12. c. (2x2 - 2x - 12) = (x + 3) = (2x + 4) d. (2x2 - 2x-12) - (x-3) = (2x + 4) e. (x+3) is a factor of 2x2 - 2x - 12. o f. the number -3 is a root of fx) = 2x2 - 2x - 12. previous

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).