Part 1
the sixth term of a sequence is 128 and the common ratio is 2. use the explicit formula for a geometric sequence to find
the first term.
part 2
use the information from part 1 to write an explicit formula for the nth term of a geometric sequence. find the 21st term
of the sequence.
complete your work in the space provided or upload a file that can display math symbols if your work requires it. include
all of part 1 and part 2 in your answer.

see explanation

Step-by-step explanation:

Part 1

The n th term of a geometric sequence is

= a

where a is the first term and r the common ratio

Given = 128, then

a = 128, that is

32a = 128 ( divide both sides by 32 )

a = 4 ← first term

Part 2

= 4 = 4 × 1048576 = 4194304

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

mark brainliest