Answer:

Step-by-step explanation:
Probability:
Probability of NOT 6:

Probability of NOT H:

Probability of NOT 6 and NOT H:

$206.27 per month is needed to payoff the balance in 2 months. Total interest is $12.54.
Maybe the second one or third one
Answer:
C / (2 pi) = r
Step-by-step explanation:
C = 2 pi r
Divide each side by 2 pi
C / (2 pi) = 2 pi r/ (2 pi)
C / (2 pi) = r
Answer:
40 minutes
Step-by-step explanation:
12 envelopes every 10 minutes.
48 envelopes = 40 minutes