Find the value of the following summations. Show your steps. a) ₁(k² + 1) and Σ₁ k² + 1. =1 b) 11/2+1/4 1/8 + 1/16 - c) If you take a job on Jan. 1, 2022, which pays $75,000 annually with a 3.5% increase at the end of each year, by the last day of 2026, how much will you earn in total through all these years?