First, calculate the earnings of Haeley for 55 hours of work:
55 x 18 = 990
She got $990
From deductions it is necessary to subtract $105.
Due to the withholdings by retirement fund it is also necessary to subtract $60.
Moreover, due to Haeley's favorite charity you subtract $35.
Hence, the final week's gross pay is:
990 - 105 - 60 - 35 = 790
Haeley week's gross pay is $790