In parallelogram lmno, what is the measure of angle m? (5x) 20° 60° 80° 100° (3x + 40)

Is this a polynomial function? i need to know asap

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0