Write the sum using summation notation, assuming the suggested pattern continues. 729 + 1000 + 1331 + 1728 + + n3

See the explanation below.

For the summation notation, we will start with the capital Greek letter Sigma. It looks like a capital E. It means to add up all the values in the list.

At the bottom of the E, we will put n = 9 because we are starting with the the number 9. 

At the top of the E, we will put n, because we will count to the number end, whatever it needs to be in our problem.

On the right of the E, we will put the expression that we are using. In this case, we are taking n to the third power, or n^3.

The answer is c. 7 (i think) i’m almost sure though