1. The marketing manager of a soft drink company evaluates the success of promotions that have been carried out recently. He examined the relationship between the number of batik cloths sold {in thousands of pieces] during the promotion and the length {in days} of the promotion 1. _\"\"m\" mumm- Question: a. How is the relationship between the length of promotion and the number of sales of batik cloth? Explain '. b. Create a simple regression line equation! c. If planning a 60day promotion, howr many batik fabrics are expected to sell