Step - 1: Calculate 20% of 840.

Step - 2: Subtract from 840.

B would be your answer because the chart says 1 shirt equals $25 dollars, 2 shirts equal $40 and 3 shirts equal 55 dollars. On the graph (B) if you find your number of shirts (x) and look up at the line and see that it is in line (y) with the cost that is how u find ur answer. Hope this helped!
Answer:
3x5x2=30
Step-by-step explanation:
This needs to be 20 characters long but it’s 4/3