Mohamed and li jing were asked to find an explicit formula for the sequence -−5,−25,−125,−, 5, comma, minus, 25, comma, minus, 125, comma, minus, 625, comma, point, point, point. mohamed said the formula is g(n)=-5\cdot5^{\large{n}}g(n)=−5⋅5 n g, left parenthesis, n, right parenthesis, equals, minus, 5, dot, 5, start superscript, n, end superscript, and li jing said the formula is g(n)=-5\cdot5^{\large{n-1}}g(n)=−5⋅ 5 n−1 g, left parenthesis, n, right parenthesis, equals, minus, 5, dot, 5, start superscript, n, minus, 1, end superscript.