5. Write an equation that models exponential decay.
1 answer:
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Given:
Consider the below figure attached with this question.
The linear equation is:
To find:
The values to complete the table of ordered pairs for the given linear equation.
Solution:
We have,
Substituting in the given equation, we get
So, the value for first blank is -8.
Substituting in the given equation, we get
So, the value for second blank is 3.
Substituting in the given equation, we get
So, the value for third blank is -4.
Therefore, the required complete table is:
x y
0 -8
3 -2
2 -4
Answer:
b. Kathy
Step-by-step explanation:
We compare each of their score by how far away from the mean when in term of the standard deviation. Using the following formula
For John he is (85 - 75)/5 = 2.
For Kathy she is (80 - 50)/10 = 3.
Since Kathy is 3 standard deviation better than her class' average, while John is only 2's. We conclude that Kathy did better.