Answer:
Step-by-step explanation:
3 roots
namely -7/9,-1/4.-4/3
Answer:
25.71%
Step-by-step explanation:
Although the first instinct would be to say that his approval rating changed by 18%, the actual percent change for the candidate's approval rating is given by the difference between both polls (18%) divided by the candidate's approval in the first poll (70%):

The percent change for the candidate's approval rating was 25.71%
H=9.3
h+2.9=12.2
2.9-2.9=0
12.2-2.9=9.3
I hope that helped
Answer:
x and y have a weak, negative correlation
Step-by-step explanation:
the reason that is, is because since the points aren't in a approximate line it is considered weak. Since the line is going from left to right it is considered negative. (hope this helped :)
Answer:
A prospective study
Step-by-step explanation:
A prospective study watches for outcomes, such as the development of a disease (in this case cancer). It also usually involves taking a group of subjects and watching them over a long period of time. The outcome of interest should be common between them (whether certain smoking habits lead to the development of cancer in British doctors).