QUESTION 3 3.1 Given 0; -1; 1; 6; 14;... 3.1.1 Show that this sequence has a constant second difference. 3.1.2 Write down the next term of the sequence 3.1.3 Determine an expression for the nth term of the sequence 3.1.4 Calculate the 30th term. (1) (4) (2)