Wang lei and amira were asked to find an explicit formula for the sequence 30\,,\,150\,,\,750\,,\,,150,750,, comma, 150, comma, 750, comma, 3750, comma, point, point, point.

wang lei said the formula is g(n)=30\cdot5^{\large{n-1}}g(n)=30⋅ 5

n−1

g, left parenthesis, n, right parenthesis, equals, 30, dot, 5, start superscript, n, minus, 1, end superscript, and

amira said the formula is g(n)=6\cdot5^{\large{n}}g(n)=6⋅5

n

g, left parenthesis, n, right parenthesis, equals, 6, dot, 5, start superscript, n, end superscript.

which one of them is right?