If f (x)=3x+2 abg g(x)=x^2-x,find the value

First step: ($1800.00/$6000.00) =.30 =30%

Second Step: $6000.00-$1800.00) = $4200.00

Third Step: ($4200.00x.25)=$1050.00 (gave to Charity)

($1050.00/6000.00)= 18% (Gave to charity)

ADD: $(4200.00 +1050) =$5250.00

Then: ($6000.00-5250.00)=$750.00

To Check: ($4200.00+$1050.00+750.00) =$6000.00