Answer:
A. neither; 7, -20, 61
Step-by-step explanation:
The given terms do not have a common difference, so the sequence is not arithmetic.
The given terms do not have a common ratio, so the sequence is not geometric. (Any sequence with 0 as a term cannot be geometric.)
The sequence is <em>neither</em> arithmetic or geometric.
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The first differences of the terms of this sequence are ...
-1, 1, -3
If we choose answer A (the only selection with "neither"), it suggests the next 3 terms are 7, -20, 61. These terms make the next differences be 9, -27, and 81. After the first term, the differences of the proposed sequence have a common ratio of -3. However, the first term needs to be 1/3 in order for that rule to be consistent for the whole sequence.
I’m not so sure, but I think it might be:
f(x)=x-1
Sorry if wrong
-2x - 13 = -3x - 5
Step 1: Combine like terms
x's go with x's (-2x and -3x). To do this add 2x to both sides
(-2x + 2x) - 13 = (-3x + 2x) - 5
(0) - 13 = (-x) - 5
- 13 = -x - 5
normal numbers go with normal numbers ( -13 and -5). To do this add 5 to both sides
(- 13 + 5) = -x + (- 5 + 5)
-8 = -x + (0)
-8 = -x
Step 2: Isolate x by dividing -1 to both sides (this will take the negative sign away from the x)
![\frac{-8}{-1} =\frac{-x}{-1}](https://tex.z-dn.net/?f=%5Cfrac%7B-8%7D%7B-1%7D%20%3D%5Cfrac%7B-x%7D%7B-1%7D)
8 = x
x= 8
Hope this helped!
<span>(1) narrower and open downward</span>