Running 2 miles at 8:15 per mile takes 16:30 minutes.
Running 3 miles at 7:12 per mile takes 21:36 minutes.
The total running time is 16:30 + 21:36 = 38:06 minutes. That length of time after 6:52 am is 7:30:06 am.
You get home for breakfast at 6 seconds past 7:30 am.
The answer to the question
Answer:
3.52
Step-by-step explanation:
3.5274 to be exact
Doubling the width would use less cardboard.
Justification:
Doubling the height will use 9in more cardboard
Doubling the width will only use 2 more inches of cardboard
Given:
In 1999, the number of mosquitos = 2500
They tripled every year.
To find:
The model for this situation and find the number of mosquitos in 2005.
Solution:
The general exponential modal is
...(i)
Where, a is the initial value and 0<b<1 is decay factor and b>1 is growth factor.
In 1999, the number of mosquitos is 2500.
Initial value: 
They tripled every year. So, growth factor is 3>1 and it is exponential growth.
Growth factor: 
Putting
and
in (i), we get
...(ii)
Here, y is the population of mosquitos after x year of 1999.
Therefore, the required exponential growth modal is
.
We know that,

Putting x=6 in (ii), we get



Therefore, the estimated number of mosquitos in 2005 is 1822500.