Answer:
A. 7,348
Step-by-step explanation:
P = le^kt
intitial population = 500
time = 4 hrs
end population = 3,000
So we have all these variables and we need to solve for what the end population will be if we change the time to 6 hours. First, we need to find the rate of the growth(k) so we can plug it back in. The given formula shows a exponencial growth formula. (A = Pe^rt) A is end amount, P is start amount, e is a constant that you can probably find on your graphing calculator, r is the rate, and t is time.
A = Pe^rt
3,000 = 500e^r4
now we can solve for r
divide both sides by 500
6 = e^r4
now because the variable is in the exponent, we have to use a log
![log_{e}(6) = 4r](https://tex.z-dn.net/?f=log_%7Be%7D%286%29%20%3D%204r)
ln(6) = 4r
we can plug the log into a calculator to get
1.79 = 4r
divide both sides by 4
r = .448
now lets plug it back in
A = 500e^(.448)(6 hrs)
A = 7351.12
This is closest to answer A. 7,348
Answer:
<em>See below.</em>
Step-by-step explanation:
Divide to turn the percentage into a decimal.
![\frac{7}{100} =0.07](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B100%7D%20%3D0.07)
Multiply to find the total amount of tax.
![85*0.07=5.95](https://tex.z-dn.net/?f=85%2A0.07%3D5.95)
Add it to the total.
![85+5.95=90.95](https://tex.z-dn.net/?f=85%2B5.95%3D90.95)
<em>Answer: </em>
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Are you ok? do you want to talk about it babe?
She must score an 80.
85*5= 425
425-89-79-83-94= 80
Answer:
A) 5x-6y=3
B) 7y=2x+8
B) -2x + 7y = 8 then multiplying "B" by 2.5
B) -5x +17.5y = 20 then adding this to A
A) 5x -6y = 3
11.5y = 23
y = 2
x = 3
Step-by-step explanation: