22. The table below shows the cost of shirts from A-better Design. What is the linear function for the cost of shirts from A-better Design? *
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|___# of shirts________|__10__|__20___|__30__|__40__ |
|___total cost ($)______ |__70__|__125__|__180__|__235__ |
A. y=5.50x+15
B. y=7x
C. y=5x+20
D. y=6x+10
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