A. C (6) = 15.24; C 11 = 22.09.
C (6) represents the cost, $15.24, of delivering flowers to a destination that is 6 miles
from the shop.
C (11) represents the cost, $22.09, of delivering flowers to a destination that is 11 miles
from the shop.
b.
Let X be large frames and Y be small frames.
X+Y=23
15X+5Y=195 or 3X+Y=39
Thus 2x=16
so X=8
so Y=15
The answer is -10! Glade I could help!!