\fCalculate S12 for the geometric series 4 + 10 + 25 + ... . O A. 158,943.053 O B. 95.367.432 O C. 63,575.621 O D. -345.9909 2-1 Evaluate -28 using the finite geometric sum formula. Round your answer to three decimal places. N i=1 O A. 717.609 O B. -18.703 O C. -0.109 O D. 56.109Find a? in the geometric series in which 85 = 61 and the common ratio is -3. O A. 429 O B. -547 O C. 2.680 O D. 2,188 Jamison just started a new job as a firefighter earning an annual salary of $38,500.00. His contract states that he will receive a 3% salary increase every year after his first year on the job. Find Jamison's total earnings over the course of his first six years as a firefighter. O A. $204,401.73 O B. $44,632.05 O C. $249,033.78 O D. $14,014,000.00