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faust18 [17]
3 years ago
12

Which of the following functions represents a cell phone bill if there is a monthly charge of 20 dollars plus 6 cents for each m

inute of use? f(x) = 20 + 6x f(x) = 20.06x f(x) = 20 + 0.06x
Mathematics
2 answers:
castortr0y [4]3 years ago
7 0
It would be f(x) = 20 + 0.06x
Semenov [28]3 years ago
3 0

Answer:

Option 3rd is correct

f(x) = 20 + 0.06x

Step-by-step explanation:

Let x be the time in minutes and f(x) be the cell phone monthly bill.

Given the statement:

if there is a monthly charge of 20 dollars plus 6 cents for each minute of use

Use conversion:

1 cent = 0.01 dollars

6 cents = 0.06 dollars

"\text{0.06 dollars for each minute of use} means 0.06 x

then;

the function represents a cell phone monthly bill is given as:

f(x) = 20 + 0.06x

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