Answer:
There was a 4.9% increase in gasoline prices.
Step-by-step explanation:
In order to calculate the z-score of a normal distribution, you need to apply the formula:
z = (o - m) / s
where:
o = observed value
m = mean
s = standard deviation
In your case:
z = (259 - 239) / 25 = 0.8
The answer is, indeed, z = 0.8
<h2>
Explanation:</h2>
We know that Karen operates a hot dog stand. So we have:
<u>On Wednesday:</u>
<u></u>
<u></u>
<u></u>
<u></u>
<u>On Thursday:</u>
<u></u>
<u></u>
<u></u>
<u></u>
Therefore, if x is the amount of hot dog buns she used on Thursday, then:

Therefore, on Thursday she used 28/9 bags of hot dog buns.
Answer:
t + 8 = 82
Step-by-step explanation:
I believe they want the temperature at 11, so we would use the variable t to represent that. Then, we need the sum of that temperature and 8 degrees to break the record of 82 degrees, so we would do t, the temperature, added to 8 degrees, which will break the record of 82 :)