Anewspaper ad includes a telephone number 1-555-dial vsw. how many seven letter arrangements are possible for the phone number using the 26 letters of the alphabet of no letter is ised more than once? express your answer using scientific notation.

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.