The following is an extract of a cost report for Big Whale Car Wash for the twelve months from October to the following September.

The car washing labour cost is a:

Group of answer choices

semi-variable cost

variable cost

fixed cost

step-fixed cost

The following is an extract of a cost report for Big Whale Car Wash for the twelve months from October to the following September. Number of Car washing Month cars washed labour costs ($) Oct 584 11,000 Nov 549 11,000 Dec 505 11,000 Jan 496 9,000 Feb 432 9,000 Mar 408 9,000 Apr 381 7,000 May 324 7,000 Jun 319 7,000 Jul 280 5,000 Aug 249 5,000 Sep 209 5,000 The car washing labour cost is a