Help needed it’s not B...

Atriangle has side lengths of 15 inches and 30 inches. it also has angles that measure 45º and 20º. which of the following identifies the possible third angle of the triangle? a. 15 in., 65º b. 45 in., 65º c. 17 in., 115º d. 14 in., 115º

Which system of linear inequalities is graphed? can somebody pleasssse

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6