Ms. trowbridge will receive a 40% discount off her first cell phone bill. her monthly cell phone plan charges a flat monthly fee of $25.00 plus $0.20 per minute. if ms. trowbridge talks on her cell phone for 300 minutes during the first month of cell phone service, what will be the amount of her first cell phone bill?

a) $34.00
b) $36.00
c) $45.00
d) $51.00

(D) The amount of first cell phone bill of Ms. Trowbridge after 40% discount is $51.

Step-by-step explanation:

Given information:

The discount on first cell phone bill is 40%

The flat charges on bill is $25

The charge per minute is $0.20

So, the amount charged for 300 minutes will be

So, the total monthly cell phone charges

Now the actual monthly bill (B) after discount of 40% is:

Hence , the first cell phone bill of Ms. Trowbridge after 40% discount is $51.

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$51.00

Step-by-step explanation:

Since $0.20 is charged per minutes , that is , the amount charged for 300 minutes will be :

300 x 0.20 = $60

Her monthly cell phone plan charges a flat monthly fee of $25.00 , that is the total amount charged will be

$60 + $25

= $85

There is a 40% discount , then we have

40% of $85

= $34

So, the amount of her first cell phone bill = $85 - $34

= $51.00

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range