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lilkari5
10.07.2019 •
Mathematics
The monthly cost c (in dollars) a cell phone carrier charges is c= 0.05m+45, where m is the number of minutes used that exceed 500 minutes per month. find an equation for the inverse function and interpret its meaning. list any restrictions on the domain and range of the inverse function.
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Ответ:
C= 0.05m+45, where m is the number of minutes used that exceed 500 minutes per month.
to find the inverse of the given function , solve the equation for m
C= 0.05m+45
C - 45 = 0.05m
divide by 0.05 on both sides
20C - 900 = m
Inverse function is m = 20C -900
C is the monthly cost. Inverse function gives the number of minutes that exceeds 500 minutes per month.
When number of minutes is 500, then cost is 70
We know number of minutes used that exceed 500 minutes per month
So domain (cost) of inverse function is [70, ∞)
Range (minutes) of inverse function is [500, ∞)
Ответ:
926.7°C
Step-by-step explanation:
1700°F=926.7°C
(1700°F-32)•5/9=926.667°C
926.667°C rounded to one decimal place 926.7°C