concerning the company's costs:

For example, electricity costs should be $$1,400$ per month plus $$0\mathrm{.}05$ per car washed. The company expects to wash $8,400$ cars in

August and to collect an average of $$6\mathrm{.}80$ per car washed.

The actual operating results for August are as follows:

Required:

Prepare a flexible budget performance report for August.