Describe and correct the error in identifying the like terms in the expression 3x - 5 + 2x*2 + 9x = 3x +2x*2 + 9x - 5 like terms: 3x,2x*2, and 9x

Trigonometry hellllllpppppppp asap

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

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.