Petra also has this information about the arrival times of trains last week. The train company has a target 98% of trains must a
rrive no more than 10 minutes late. Was the target met last week. Show why you think this.
1 answer:
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Use the quadratic formula where a = -16, b = 175 and c = 500 to find t. See picture for quadratic formula.
Consider the missing part of the question is "Select the correct statement.
A. The number of employees is increasing by 50% every year.
B. The number of employees is decreasing by 10% every year.
C. The number of employees is decreasing by 90% every year.
D. The number of employees is increasing by 90% every year."
Given:
The function is:
Where, f(t) is the number of employees working at a company, in thousands and t is the number of years since the company revised the benefits package.
To find:
The correct statement from the given options.
Solution:
The general exponential decay model is:
...(i)
Where, a is the initial value, r is the rate of decay and t is the number of years.
We have,
It can be written as
...(ii)
From (i) and (ii), we get
The initial value is 1.5 and the rate of decay is 0.10 or 10%. It means the number of employees is decreasing by 10% every year.
Therefore, the correct option is B.
Answer:
#14 #15
Step-by-step explanation with pictures.
I hope this helps! :D
