The ages of the members of four teams are summarized below. Answer the questions about them. Team A: The range of ages is 14 and the mean age is 35.
Team B: The range of ages is 21 and the mean age is 33.
Team C: The range of ages is 16 and the mean age is 39.
Team D: The range of ages is 22 and the mean age is 31.
(a) Based on the information above, which team's ages have the least variability?

Team A

Team B

Team C

Team D
(b) Based on the information above, which team has the oldest members on average?

Team A

Team B

Team C

Team D

15

step-by-step explanation:

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

345

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for