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daphnevlogs11
16.01.2021 •
Mathematics
Find the average rate of change
f(x)=x^2−6x+8 when x2=1 and x1=3
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Ответ:
Average rate of change for given function is: -2
Step-by-step explanation:
Given function is:
In order to find the rate of change, we have to find the value of function on x1 and x2
So,
The formula for finding the rate of change is:
Putting the values, we get
Hence,
Average rate of change for given function is: -2
Ответ:
2000 customers paid the old rate and 500 customers paid the new rate.
Step-by-step explanation:
The new renewal rate is twice the old rate. That is
dollars
Let x be the old rate.
Let y be the new rate.
As given: Your income from renewals was $750,000 this year.
So, we have the following equation:
And total you have 2500 customers, so we get the following equation:
Deriving
from (2) and substituting in (1)
=>![y=3000-2500](/tpl/images/1071/9042/d9fe9.png)
y = 500
x = 2000
Hence, 2000 customers paid the old rate and 500 customers paid the new rate.