In the following subtraction problem, the same letters represent the same digits, and different letters represent different digits. If D = 0, C = 1 and E = 7, what digit does the letter A represent. ABCD - ABC = ADEF. State your answer and explain your thinking.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.