Answer:
the cost of talking for 15 minutes would be $1.5
15x0.1=1.5
for $50 you could talk for 500 minutes.
50/0.1=500
double check, 500x0.1=50
1
-
8 that is the same as 1 over 8
The interval

corresponds to the part of the distribution lying within 2 standard deviations of the mean (since 500-2*100=300 and 500+2*100=700). The empirical rule states that approximately 95% of the distribution is expected to fall in this range.
Answer:
pick number 3 I think that's the one
2+3x7-32x64-8+764x33398x986+12=
25158844971