What is this for q 9 plsss help

Which value is not a solution of 8x^3 – 1 = 0

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio

Tiene pendiente -4 y pasa por el punto (-3,-2) encuentre la ecuación de la recta