If –3 + i is a root of the polynomial function f(x), which of the following must also be a root of f(x)?

Which sentence describes why polygon mnop is congruent to polygon jklp? a. polygon jklp maps to polygon mnop through a translation. b. polygon jklp maps to polygon mnop through a rotation. c. polygon jklp maps to polygon mnop through a dilation. d. polygon jklp maps to polygon mnop through a stretch.

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Nine more than four times a number is the same as one less than twice the number. find the number?