Answer:
See below:- 2 are correct.
Explanation:
an = 3n - 7 :- 52 is not term 15, as 3(15) - 7 = 38
an = 4n + 3 :- term 7 is 4(7) + 3 = 31 (CORRECT). Term 9 is 4(9) + 3 = 39 - none of numbers in the list. term 10 = 40 + 3 = 43.
an = -2n + 4 :- term 8 is -16 + 4 = -12.
an = -n -7 :- term 6 = -6-7 = -13 (CORRECT). Term 7 = -7-7 = -14.