Suppose a = {2, 5, 7, 9, 13, 25, 26}. (a) find n(a). (b) true or false: 13 ∈ a (c) true or false: 26 ∉ a (d) true or false: 10 ∉ a

How do i do this activity, is appreciated

Which of the following is the inverse of y = 3∧x y = 1/3∧x y = ㏒3x y = (1/3) ∧x y = ㏒ 1/3∧x

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.