It opens upward and the vertex is (2,-6) here are some plotted points: (0,6),(1,-3),(2,-6),(3,-3),(4,6). Hope that helps. I hate graphing but if you do it enough times you'll get the hang of it!
Answer:
We need a sample size of least 119
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Sample size needed
At least n, in which n is found when 
We don't know the proportion, so we use 
, which is when we would need the largest sample size.
Rounding up
We need a sample size of least 119
Answer:
1/4
Step-by-step explanation:
dy/dx(1/4x + 14)=1/4
Answer:
$2.00
Step-by-step explanation:
If Zak is Buying 6 gallons, and he has a coupon for each gallon for $0.55 off, we need to first find how much he saved.
We can do this by calculating $0.55 (or 0.55) multiplied by 6. This answer is 3.30, or $3.30.
Now we add $3.30 to $8.70 to get the normal price for 6 gallons of fruit punch.
3.30 + 8.70 = 12.00, or $12.00
The normal price for 6 gallons of fruit punch is $12.00.
Now, we divide 12 by 6 to get the cost of one single gallon of fruit punch.
12/6 = 2
One gallon of fruit punch costs $2.00
Hope this helps! Have a great rest of your day! :)
