What are the powers of 3 that are in the range of 1000

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.

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i