3. Which relation shown is not a function?
{(1,5), (3, 7), (4, 10), (11,2), (4,8)}
{(1, -1), (2, -2), (3, -3), (4,-4), (5,-5)}
{(4,5), (5, 7), (3, 1), (1,3), (6,8)}
{(14,5), (5,5), (3,5), (11, 5), (5,5)}

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

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.