Answer:
Step-by-step explanation:
To make this easier, to get ride of the fractions, we can multiply both sides by 4
now use the distributive property
now we want to isolate x to one side and isolate all the constants to the other
now simplify
to test, we can plug in back to the original
it works
ANSWER
EXPLANATION
The given sequence is
3,-5,-13,.....-229.
The first term of this sequence is
a_1=3
There is a common difference of
The last term of this sequence is -229.
The nth term of this sequence is given by:
We use the last term to determine the number of terms in the sequence.
Divide through by -8;
Hence there are thirty terms in the sequence.
The sum of the first n terms is given by:
The sum of the first 30 terms is given by:
