I am soooo very desperate I need help with 3 problems I've been stuck on for an hour please help and don't guess I need to make sure they are 100% right ??!?

Question

anonymous · Answer

which ones

anonymous · Answer

What are the explicit equation and domain for a geometric sequence with a first term of 4 and a second term of -12?

anonymous · Answer

sorry I can't help

perl · Answer

how do you get from the first term to the second term?

anonymous · Answer

2. What are the explicit equation and domain for an arithmetic sequence with a first term of 5 and a second term of 2?

anonymous · Answer

@perl I'm not sure I just really need help and to get answers asap please

anonymous · Answer

And 3. What is the sum of the geometric sequence -3,24,-144 if there are 6 terms?

I think this one is 26,661 but I'm not sure

anonymous · Answer

@dddd47906 could you help me on the last one maybe ?

perl · Answer

for geometric sequence , the  explicit equation is 
$$ \LARGE {
a_n= a_1\cdot r^{n-1}

}$$

anonymous · Answer

@perl okay and than ?(:

perl · Answer

r is the ratio of consecutive terms
r = -12/4 = -3

anonymous · Answer

I am super lost ;( what you by an chance show me the steps and answer all In one for each of the question pretty please you would seriously be a life savior

anonymous · Answer

@perl

perl · Answer

I'm not allowed to give the answer, but I can guide you.

anonymous · Answer

Um, I haven't learned that... You see, I'm still in 6th grade.

anonymous · Answer

@perl I know your not to just hand me the answer but could you show me the steps to get the answer please