And the 4th term

Show that the given sequence is geometric. Then, find the common ratio and write out the first four terms. (t) = 20 -1 30 20 - 1 to 30 h - 1 = (Type an exact answer in simplified form. Use integers or fractions for any numbers in the expression.) What is the value of the common ratio? (Type an integer or a simplified fraction.) What is the value of the first term? (Type an integer or a simplified fraction.) What is the value of the second term? (Type an integer or a simplified fraction.) What is the value of the third term? 7 /Time an intonor or a cimolifial fraction ) Ti