Given the sequence 9,8, 64/9, 512/81,, find the following values:

a= ____________ (If necessary, express your answer as a simplified fraction with no spaces (ex: 2/3))

r= ______________ (If necessary, express your answer as a simplified fraction with no spaces (ex: 2/3))

a^10= _________ (Enter your answer in decimal form, rounded to three decimal places)