The following Cobb-Douglas production function is used to describe the output generated by a local government maintenance agency. Q = ?L?1K?2E?3 Where L represents number of worker hours, K represents number of trucks used, and E represents energy used. Statistical estimated generated the following values for ?, ?1, ?2, and ?3. ? = 0.01; ?1 = 0.5, ?2 = 0.4, and ?3 = 0.2 a. What are the production elasticities of demand for labor, capital (trucks) and energy? b. If worker hours (labor) are increased by 10% next year, how much will output (Q) increase? c. If the number of trucks (K) decreases by 10% next year, how much will output (Q) decrease? d. What type of returns to scale is consistent with the above production function?