Practice Question 09 Your phone service provider offers a plan that is classified as a mixed cost. The cost per month is $50 flat rate for the first 1,000 minutes plus $0.35 for each minute exceeding 1,000 minutes. If you use 1,200 minutes this monch, your cost will be $50 $70 $120 Practice Question 13 On a CVP income statement OSales-Cost of goods sold Contribution margin. Sales-Fixed costs-Contribution margin. O Sales -Variable costs -Fixed costs Contribution margin. Sales-Variable costs Contribution margin