How do we simplify (2x)^3

Find two rational expressions that have the difference of 2-n/n-4

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.

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?