Need i don’t understand this problem

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

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x