If an = 6 (0.5)n-1- then a9 = ?
a. 0.01171875
b. 19683
c. 0.0234375
d. 10

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Ithink it’s d as the answer.