The answer you want is -10
I’m not that smart i just get answers off the internet
Answer:

Step-by-step explanation:
The given sequence is
-12,-16,-20...
The first term of this sequence is
.
The common difference is


The nth term of this arithmetic sequence is;

We substitute the values for the first term and the common difference to obtain;

Step-by-step explanation:

⇢ 
⇢ 
⇢ 
⇢ 
⇢ 
---------------------------------------------------------

⇢ 
⇢ 
⇢ 
⇢ 
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Answer:
a) 15
Step-by-step explanation:
x+8
substitute x value in
7+8
=15