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).
Step-by-step explanation:
f(1)= 64+6(1)
=64+6
=70.
thus, f(1) = 70
f(n)=f(n-1)+?
1=(1-1)+70
1=0+70
=70-1
=69
9” one” glad I could help.
393 is 3 times as much as 131 because 393/3 is 131 and 131 times 3 is 393