Asap. find the first, fourth, and eighth terms in the sequence. (a( n )=-2*5^n-1 a) -2; - 250; -156,250 b) -10; -1,000; -10,000,000 c) 0; -250; -156,250 d) -10; -1,250; -781,250 write a rule for a geometric sequence that has negative 6 as its first term and a common ratio of 2. what is the tenth term of this sequence?