epicdragon1000
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PLEASE HELP
A family's cell phone contract charges a monthly fixed fee of $56 for five lines and then $0.08 per minute. The latest cell phone bill was $164. How many minutes did the family use? Write an equation to represent this situation. Then solve the equation.

A. 56 + 0.08x = 164; x = 1,350
B. 56 + 0.04x = 164; x = 2,700
C. 56 + 0.07x = 164; x = 1,543
D. 0.08 + 56x = 164; x = 3

Respuesta :

smmwaite

Answer

A. 56 + 0.08x = 164; x = 1,350


Explanation

Let the number of minutes the family used be x.

The cost on the x minutes = $0.08 × x

                                            $0.08x

The fixed cost =  $56

Total cost for the phone bill =  $164

∴ 0.08x + 56 = 164

  56 + 0.08x = 164   .................  The equation

Solving it.

56 + 0.08x = 164

put the like terms together,

0.08x = 164 - 56

            = 108

0.08x = 108     Divide both sides by 0.08

x = 108/0.08

   = 1,350 minutes

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