X Bank desires to open new checking accounts for customers who will write at least 30 checks per month. To assist in selecting new customers, the bank has studied the relationship between the number of checks written and the age and annual income of eight of their present customers. Age was recorded to the nearest year, and annual income was recorded in thousands of dollars. The data are as follows: Checks Age Income 29 37 16.2 42 34 25.4 9 48 12.4 56 38 25.0 2 43 8.0 10 25 18.3 48 33 24.2 4 45 7.9 a. Develop regression equation to use age and income to predict the number of checks written per month. b. How many checks per month would be expected from a 35yearold with annual income of $22,500