Answer:
(6 - 5x(2))(x(4) - x(3))
(6 - 5x^2) (x^4 - x^3)
6x^4 - 6x^3 - 5x^6 + 5x^5
-5x^6 + 5x^5 + 6x^4 - 6x^3
Step-by-step explanation:
B as it goes through the correct and average amount of points on the graph, hope this helps
First term: a1 = 151
common difference: d = -14 (we decrease by 14 each time, eg, 151-14 = 137)
nth term of this arithmetic sequence is...
an = a1+d(n-1)
an = 151+(-14)(n-1)
an = 151-14n+14
an = -14n+165
This will be used in the formula below
Sn = n*(a1+an)/2
<span>Sn = n*(151+(-14n+165))/2
</span><span>S26 = 26*(151+(-14*26+165))/2 ... replace every n with 26
</span>S26 = -624
The final answer here is choice C) -624
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