Hello, may someone please help on this Arithmetic and Geometric Progressions? I've worked on this but feel that my solutions are incorrect. I'd like to double check my work. Thank you so much, I appreciate you! Determine whether the following are arithmetic or geometric progressions (or neither), then find the formula for On, and finally find the sum of the first 9 terms:a) - 1, -4, -16, -64, ...b?-1/5, -1, -9/5, -13/5,...?) 0.003, 0.03, 0.3, 3, ...d) 0, 0, 0, 0, ...

Problem 13. Arithmetic and Geometric Progressions. Determine whether the following are arithmetic or geometric progressions (or neither), then find the formula for an, and finally find the sum of the first 9 terms: a) -1, -4, -16, -64, ... b) - 3, -1, - 3, 5 1 . c) 0.003, 0.03, 0.3, 3, ... d) 0, 0, 0, 0