i need help on all of them plz

Answer: (3)The average change in temperature each day is 5 degrees. (4) The average number of points relatives to their opponents is 8. (5)The average yearly drop in enrollment is 12. (6) It will take 11 min.
Explanation:
The Formula to find the average is,
[tex]\text{Average}=\frac{\text{Sum of terms}}{\text{Number of terms}}[/tex]
(3)
It is given that Total dropped temperature in 7 days is 35.
Since total change in temperature is 35 and number of days is 7.
[tex]\text{Average}=\frac{35}{7}[/tex]
[tex]\text{Average change in temperature}=5[/tex]
Therefore, the average change in temperature each day is 5 degrees.
(4)
The teams lost by total of 48 points in 6 matches.
Since total points is 48 and number of matches is 6.
[tex]\text{Average points}=\frac{48}{6}[/tex]
[tex]\text{Average}=8[/tex]
Therefore, the average number of points relatives to their opponents is 8.
(5)
The school dropped by 60 students over 5 years.
The total number of dropped students is 60 and the number of years is 5.
[tex]\text{Average Students}=\frac{60}{5}[/tex]
[tex]\text{Average Students}=12[/tex]
Therefore, the average yearly drop in enrollment is 12.
(6)
The submarine descends at the rate of 60 feet per min. The total depth is 660.
[tex]\text{Average Time}=\frac{660}{60}[/tex]
[tex]\text{Average Time}=11[/tex]
Therefore, the submarine will descend 660 feet in 11 min.