Answer:
Option 3rd is correct
[tex]f(x) = 20 + 0.06x[/tex]
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
"[tex]\text{0.06 dollars for each minute of use}[/tex] means 0.06 x
then;
the function represents a cell phone monthly bill is given as:
[tex]f(x) = 20 + 0.06x[/tex]
