Only do number 2 vote you brainiest

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]

Find the area of the triangle shown 3 by 6

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom