Which formula describes the following arithmetic sequence? remember that n represents the term number. 3, 5, 7, 9, an = 2 ∙ 3n - 1 an = 3 ∙ 2n - 1 an = 2 + 3(n - 1) an = 3 + 2(n - 1)

4

step-by-step explanation:

in english this is

ex.15 pag.85 create. write in ten lines the continuation of the ballad of the five motanasi, using verbs to the imperfect and to the perfect compound. five stars

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mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb