Respuesta :

42x0.09=45.78
45.78x 0.18= 54.02

Total bill is $54.02

Sorry I am late, but I think the first answer is wrong.

Answer:

53.34

Step-by-step explanation:

42 x .18 = 7.56

42 x .09 = 3.78

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7.56 + 3.78 = 11.34

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42 + 11.34 = 53.34

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Answer = 53.34