20. The graph below shows a company's sales for four months:
Mike's BikesSales
Units
160-
140
120-
100-
.80
60.
40
20
June
July
August
Sept.
What was the total sales during the four months?
:(a) 220
(b) 360
(c) 300
(d) 340
(e) 500
Please show the work
