which of the following is the explicit rule for a geometric sequence defined by a recursive formula of
for which the first term is 
300

C

Step-by-step explanation:

The explicit formula for a geometric sequence is

= a

where a is the first term and r the common ratio

From the recursive formula

= - 9

The common ratio r = - 9 and with a = 300, then

= 300 → C

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: