Answer:
B. 70
Step-by-step explanation:
We have the sum given by 
Now, we open the summation by substituting the values of 'i',
i.e.
= (1+11) + (2+11) + (3+11) +(4+11) +(5+11)
i.e.
= 12 + 13 + 14 + 15 + 16
i.e.
= 70.
Hence, the sum of
is 70.
So, option B is correct.
Answer:
Most people tend to screen shot
Step-by-step explanation:
Sum means additions so n + 8 = (y)
2(y) = n + 12
Answer:
48
Step-by-step explanation:
You can use a graphing calculator like desmos or draw your own graph to figure this out. Start by graphing each of those points. Then count the width and height. Multiply them to get the area. The width and height of the rectangle were 6 and 8, so the area is 48