For margin of error to be a maximum of 3:
3 = z*(SD / sqrt(n)), where z is the z-score, SD is the standard deviation and n is the sample size.
z = 1.96 for a 95% confidence interval, and we are given SD = 15.
3 = 1.96*15/sqrt(n)
sqrt(n) = 9.8
n = 96.04 ~ 96 commercials.
Answer:
p=13.6h
Step-by-step explanation:
if he works 6 hours a day for five days that's 30 hours. $408 divided by 30 hours is $13.6 per hour.
Answer:
○ C. 
Step-by-step explanation:
Wherever the graph intersects the x-axis is considered your zero [x-intercept], therefore you have your answer:
![\displaystyle [0, 0], [2, 0], and\: [4, 0]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5B0%2C%200%5D%2C%20%5B2%2C%200%5D%2C%20and%5C%3A%20%5B4%2C%200%5D)
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Answer:
386
Step-by-step explanation:
If you subtract the initial fee of 12 from 70 you get 68 you just divide that by .15 meaning you can plant no more that 386 trees.
X=6 and y=-9. Not sure if y is correct since I kind of rushed but I hope this helps!
