Answer:
18s+20b<_150
Step-by-step explanation:
He can buy 5 basketballs and 2 soccer balls. This equation is correct because 18x2 is 36 and 20x5 is 100. So that will be a total of $100. This makes the equation 100<_150. You can infer that this equation is true.
Answer:

Step-by-step explanation:
Given :In a recent questionnaire about food, a random sample of 970 adults were asked about whether they prefer eating fruits or vegetables, and 458 reported that they preferred eating vegetables.
To Find :What value of z should be used to calculate a confidence interval with a 95 % confidence level?
Solution:
Confidence level = 95 % i.e.0.95
So, significance level = 5% i.e. 0.05
So, the value of z corresponding to significance level 0.05 should be used to calculate a confidence interval with a 95 % confidence level
So, 
Hence z should be 1.645 to calculate a confidence interval with a 95 % confidence level.
Answer:
854
Step-by-step explanation:
1000/15=66
1000-66-80=854
well if it asks you to send to 4 people and there are 8 generations which includes yours that mean
1 sent to 4 - 4 recived
4 send to 4 each = 16 recived + the 4 before = 20 (generation 2)
16 send to 4 = 64 + 20 = 84 (generation 3)
64 send to 4 = 256 + 84= 320 (g4)
256 send to 4 = 1024 + 320 = 1344 (g5)
1344 s t 4 = 5376 + 1344= 6730 (g6)
so on and so forth till generation 8