What is the answer? I need help!! please and thank you

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]