Reiko needs to mail her christmas cards and packages and wants to keep her mailing costs to no more than $357.50. the number of cards is at least 16 more than twice the number of packages. the cost of mailing a card (with pictures enclosed) is $2.50 and for a package the cost is $6.50.

write a system of 2 inequalities to model this situation. use " x " for the number of packages and " y " for the number of cards.

What properties allow transformation to be used as a problem solving tool

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

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.