The temperature went from -12°f to 18°f. which of the following expressions could be used to find how much the temperature changed?
a. -12 - 18
b. 18 - (-12)
c. -12 + 18
d. 18 + (-12)

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.