Evaluate the Sum $$\sum _ { k = 1 } ^ { 6 } 5 k$$

Q19: Use a calculator to find the

Q20: Select the first five terms of

Q21: Select the first five terms of

Q22: Write the first six terms of the

Q23: Find the indicated partial sum of

Q25: Write the first five terms of

Q26: Use a calculator to find the

Q27: Use sigma notation to write the

Q28: Select the first five terms of

Q29: Assume that the sequence is defined