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alyssahomeworkneeds
08.09.2019 •
Mathematics
You are choosing between two different cell phone plans. the first plan charges a rate of 26 cents per minute. the second plan charges a monthly fee of $34.95 plus 12 cents per minute. how many minutes would you have to use in a month in order for the second plan to be preferable?
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Ответ:
In order for the second plan to be preferable, a greater amount of 249.6 minutes would have to be used in one month.
Step-by-step explanation:
Let
x -----> the number of minutes in a month
y ----> the charge monthly
we know that
First Plan
Second Plan
Equate the equations A and B and solve for x
so
For
----> is preferable the first plan
For
----> is preferable the second plan
therefore
In order for the second plan to be preferable, a greater amount of 249.6 minutes would have to be used in one month.
Ответ:
16
Step-by-step explanation:
she needs 4 pounds of pluma to make 6 pounds of jelly.
so 4 pounds of pluma x 4 = exactly 24 pounds of jelly. 4×4=16