Question

Samantha pays a $40 fee to own a cell phone. She also has to pay $0.10 per

minute of cell phone usage. If she talked for 500 minutes how much would her bill be?

Answer 1

90 dollars

Explanation:

Hey there! We know that:

-the 40 dollar fee does not change no matter how much you use the phone

-10 cents for every minute of cell phone usage

Using this information, we can craft an equation to calculate how many dollars her cell phone bill will be with x amount of minutes she used her phone.

We can let y= amount in dollars of her bill, and x=amount of minutes she has used her phone, because the 40 dollar fee is not dependent on how often you use your phone.

Using that information, we get y=0.10x+40

We also know that she has used it for 500 minutes. Insert this amount into the variable x and we can solve it.

y=0.10(500)+40

=50+40

=90

Therefore, her bill is 90 dollars with her 500 minutes of usage.

Answer 2

90 dollars

Explanation:

The total cost would be the fee plus the cost per minute times the number of minutes

total cost = 40 + .10(500)

=40+50

= 90

The bill would be 90 dollars