Dw/dt = k(1200 - w)
dw/(1200 - w) = kdt
-ln(1200 - w) = kt + c
When t = 0, w = 60
-ln(1200 - 60) = c
c = -ln(1140)
a.) For k = 0.8: -ln(1200 - w) = 0.8t - ln(1140)
t = [ln(1140) - ln(1200 - w)]/0.8
For k = 0.9:
t = [ln(1140) - ln(1200 - w)]/0.9
For k = 1:
t = [ln(1140) - ln(1200 - w)]
b.) For k = 0.8
t = [ln(1140) - ln(1200 - 800)]/0.8 = [ln(1140) - ln(400)]/0.8 = 1.3 years
For k = 0.9
t = [ln(1140) - ln(400)]/0.9 = 1.16 years
For k = 1
t = [ln(1140) - ln(400)] = 1.05 years
c.) For maximum weight,
dw/dt = 0
k(1200 - w) = 0
1200 - w = 0
w = 1200
Therefore, the maximum weight for each of the model is 1200 pounds.
It may be possessed, you should probably throw some salt at your dog
(C), Revealing vital personal information to new acquaintances.
Answer:
it means to follow your dream
During a formal discussion in his science class, kai will be speaking about the importance of exercise. 'Read the materials ahead of time and take notes about important ideas and viewpoints' is the best advice he can follow to be a prepared speaker.
<h3>What are the importance of exercises?</h3>
The importance of exercises are:
- Helps to decrease the risk of heart diseases
- Helps to maintain your weight
- Reduce the risk of type 2 diabetes.
<h3>What are the types of exercise?</h3>
The types of exercise are:
- Aerobic training
- Strength training
- Flexibility and mobility training
Hence, the correct answer is Option A
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