<h3>The sum expressed in sigma notation is:</h3>
<u><em>Solution:</em></u>
Given that,
11 + 17 + 23 + 29 + 35 + 41
We have to express the sum in sigma notation
Analyse the series
5 + 6(1) = 11
5 + 6(2) = 17
5 + 6(3) = 5 + 18 = 23
5 + 6(4) = 5 + 24 = 29
5 + 6(5) = 5 + 30 = 35
5 + 6(6) = 5 + 36 = 41
<em><u>Thus the series goes on like this:</u></em>
5 + 6(n) , where n = 1 to 6
<em><u>This can be expressed in sigma notation as:</u></em>
<em><u>We can expand the sigma notation and verify the results</u></em>
Answer:
The answer is C.
Step-by-step explanation:
I just did the test and the answer was C
<em><u>Question:</u></em>
At the market, 5 light bulbs cost $9. How much do 7 light bulbs cost?
<em><u>Answer:</u></em>
Cost of 7 bulbs is $ 12.6
<em><u>Solution:</u></em>
Given that,
5 light bulbs cost $ 9
Find the cost of 1 bulb
Cost of 1 bulb is found by dividing the cost of 5 bulbs by 5
Thus cost of 1 bulb is $ 1.8
<h3><u>Find the cost of 7 bulbs:</u></h3>
Thus cost of 7 bulbs is $ 12.6