Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + + 66

summation of negative forty five times n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to infinity

summation of negative forty five times n from n equals zero to infinity

It's the second choice

Step-by-step explanation:

Note that the numbers values increase by 5 .

When n = 0 , we have -9 + 5(0) = -9

when n = 1 it is -9 + 5(1) = -4

when n = 2 it is -9 + 5(2) = 1      and so on.

when n = 15 (the last term)  66 = -9 + 5(15).

We can write the summation as:

n=15

∑ (-9 + 5n)

n=0.

answer: what is the conflict?

step-by-step explanation:

*what has happened to new york city?

*what is in the time capsule?

* what did the kidz see that gave them hope?

*what will they do with what they find?

* how will they save the city?

* what challenges will they face along the way?

*what big choice will they make at the climax of the story?

* what lesson do they learn at the end of the story?

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734