x=8 (prescriptions per month)
y= $950 (total of prescription costs)
a. 12x + 86= 12(8)+86= 96+86= $182
b. 8x+114 = (8*8)+114= 64+114= $178
c.(0.10)y+98=(0.10)(950)+98= 95+98= $193
d.(0.15)a+ 32 + (0.25)b= (0.15)(500)+32= 142.5+32+ (0.25)(450)= (75)+32+(112.5)= $219.5
a= 500b= y-500= 950-500=450
Answer: $114 monthly premium; $8 co-pay
