You paid $120 for a membership to a racquetball club. Court time is $4 per hour. Write a model that represents your average cost per hour of court time as a function of the number of hours played.

You paid $120 for a membership to a racquetball club. Court time is $4 per hour. Write a model that represents your average cost per hour of court time as a function of the number of hours played.

A. f left parenthesis x right parenthesis space equals 4 over x plus 120

B. f left parenthesis x right parenthesis space equals space fraction numerator 120 plus 4 x over denominator 4 end fraction

C. f left parenthesis x right parenthesis space equals fraction numerator 120 plus 4 x over denominator x end fraction

D.f left parenthesis x right parenthesis space equals x over 4 plus space 120