Answer: B. Controlled experiment
Step-by-step explanation:
This is a controlled experiment because the variables in the question are manipulated by the researcher. We are told that while one group watches television before going to sleep, the other group does not.
The controllers won't have control over the variables that were used if it was an observational study while for a survey, it has to do with collection of information regarding certain topics or happenings in order to have people's perception on the topic or area of interest.
Lets look at the information we have:-
6.8 pounds on Sunday
8.75 pounds on Monday
How many pounds did he collect together on these 2 days?
Add:-
6.8 + 8.75 = 15.55
Dan collected 15.55 pounds of aluminum on these 2 days.
CHECK OUR WORK:-
15.55 - 8.75 = 6.8
We were RIGHT!!
So, Dan collected 15.55 pounds of aluminum on these 2 days.
Hope I helped ya!! xD
Answer:
Answer is shown in the attachment you can see.
Step-by-step explanation:
Answer:
and the slope intercept is 
See the number that it says
