A. Slope = 2
b. Slope = 2/3 or 0.66
(Slope = change in y / change in x)
Answer: 3,130
Step-by-step explanation: 2,815 + 315 = 3,130
3y-18
Pull out 3 (common factor):
3(y-6)
A) 3(y-6) is the correct answer
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:
16
Step-by-step explanation:
18+6=24
24-7=16