Last month when Holiday Creations, incorporated, sold 43,000 units, total sales were $172,000, total varlable expenses were $141,040, and fixed expenses were $37,700. Required: 1. What is the company's contribution margin (CM) ratio? 2. What is the estimated change in the company's net operating income if it can increase saies volume by 300 units and total saies by $1,200 ? (Do not round Intermediate caiculations.)