The number of cells of strain A follow the linear model
![C_A=9000-3000t](https://tex.z-dn.net/?f=C_A%3D9000-3000t)
, where
![C_A](https://tex.z-dn.net/?f=C_A)
denotes the number of cells of that strain and
![t](https://tex.z-dn.net/?f=t)
is time in hours. Meanwhile, strain B follows
![C_B=4000-2000t](https://tex.z-dn.net/?f=C_B%3D4000-2000t)
. The time
![t](https://tex.z-dn.net/?f=t)
when both strains have the same number of cells is the intersection of these two lines, or the solution to
![9000-3000t=4000-2000t](https://tex.z-dn.net/?f=9000-3000t%3D4000-2000t)
You have
![5000=1000t\implies t=5](https://tex.z-dn.net/?f=5000%3D1000t%5Cimplies%20t%3D5)
so after 5 hours, both strains should have the same number of cells.
Answer: $2.50
Step-by-step explanation: 2/16 to find what it cost for one minute. 16*1.25 because he is riding 25% more. (16*1.25) *.125
.125 if the amount for 1 minute
Speed = distance / time
speed = 32 / 2 1/3
= 32 / (7/3)
= 32 * 3/7
= 96/7
= 13.7 miles per hr <==
Answer:
400
Step-by-step explanation:
250 divide by 60 equals 4.16666666667 then you multiply by 96 witch gives you 400