contestada

A self-serve car wash charges $5.09 to use its facilities, plus an additional $0.60 for each minute the customer is at the self-serve car wash. If Tiffany was at the car wash for 9 minutes, how much was she charged?
A. $5.40
B. $10.49
C. $14.09
D. $5.69

Respuesta :

iGreen
We can create an equation to find the total cost of anyone who uses the car wash:

[tex]\sf y=5.09+0.60x[/tex]

Where 'y' is total cost and 'x' is the minutes they spent washing the car. Plug in what we know:

[tex]\sf y=5.09+0.60(9)[/tex]

Multiply:

[tex]\sf y=5.09+5.40[/tex]

Add:

[tex]\sf y=\boxed{\sf \$10.49}[/tex]

So she was charged $10.49.

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