+ Problem #7
Katy received a gift card for $100 toward her mobile phone plan. If her plan charges $0.75 per minute
for phone calls, write an equation R(m) that expresses how much money will remain on her card after
m minutes of phone calls.

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.