Hello, Seeking help to double check my answers on my most recent math lab.

Again - You do not have to show your work, I am only looking to cross reference to check if my answers

are correct before continuing.

Any response is appreciated, Thanks!

Express the following sum in sigma notation. Use 1 as the lower limit of summation and k for the index of summation. 1+2+3+ ...+14 Express the sum in sigma notation. k =1