Answer: Arithmetic and 3
Step-by-step explanation:
12 - 9 = 3 9 - 6 = 3 The common difference is equal and is three and so it is an arithmetic sequence
12/9 = 4/3 9/6 = 3/2 The ratio is not equal so this is not a geometric sequence
Need the choices cant really answer your question
= 16 + 49 - 3(11) - 4(10)
= 16 + 49 - 33 - 40
= -8
