Which of the following examples represents a proportional relationship? F Wes is making an online purchase. He pays $3 per item plus $5 for shipping.
G Wendy's cell phone plan is $20 a month plus $0.10 per minute.
H Kristin is buying lunch meat from her local deli. It is $4.95 per pound.
J Jessica is a member of the local book club. She pays $10 a month for her
membership but gets her books for $3 each.
Plz help!

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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.