I am not so sure but I think the answer is 12
All methods are supposed to be correct in most if not all situations and it should not matter if you use a different method given the options
128 times 2 is 256 divided by 2 is 128 scoops of ice cream
4a+8=14-6+4a. 4a+8=8+4a so I think it's B
Answer:
Final answer is c. 15
Step-by-step explanation:
We need to find about what is the first term in the sequence for which d = -2 and a7 = 3
We will use nth term formula of arithmetic sequence.

we have been given a7 that means 7th term is 3
so plug n=7, d=-2 and a_n=3 into above formula




Hence final answer is c. 15