The gcf of 86,129 and 215 is <u>43</u>.
Answer:

Step-by-step explanation:

(a) The team captain wants to know what his teammates eats before a match
Team captain know by taking a survey of teammates
(b) The team captain wants to know who can score most goals against the best player
This can be known by observation of games. so its observational study
(c) The team captain wants to know how praising the affects the teammates performance.
This can be known by experiment
(d) The team captain wants to know what other sports teammates play
This can be known by observation of games. so its observational study
My guess is that the exact answer would be $2544.75 because you would first multiply 2900 by .0675 to get 195.75. Then you would multiply that by 13 to get 2544.75.