Using the table, what is the cost of the luxury items?
A.$108.94
B.$187.12
C.$99.42
D.$78.18
Item Cost Item Cost
Store brand soap $2.99 Name brand soap $3.95
Name brand shoes $38.65 Store brand shoes $20.35
Name brand socks (3 pairs/pack) $6.89 Store brand socks (3 pairs/pack) $7.25
Store brand khakis for work $25.94 Name brand khakis for work $34.50
Name brand dress shirt $24.95 Store brand dress shirt $21.65
Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?