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Find the nth term of the geometric sequence whose initial term is `a_1 = 7.5 `
and common ratio is ` 9 `.

`a_n = ` (Your answer must be a function of ` n`.)

`a_n = ` (Your answer must be a function of ` n`.)

Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c

Be sure your variables match those in the question

`7.5 * (9)^(n-1)`