Find the requested sums:
• Use "DNE" if the requested sum does not exist. 1. Σ(8.4ⁿ⁻¹) a. The first term appearing in this sum is __
b. The common ratio for our sequence is __
c. The sum is __ 2. Σ( 4 ( 1/4 )ⁿ⁻¹) a. The first term of the sequence a is __
b. The common ratio for the sequence a is__
c. The sum is __
