The number of customers who buy in the second week is 35 customers * 2 = <<35*2=70>>70 customers.
The number of customers who buy in the third week is 35 customers * 3 = <<35*3=105>>105 customers.
The total number of customers who buy during the 3 weeks is 35 customers + 70 customers + 105 customers = <<35+70+105=210>>210 customers.
The total commission he receives is 210 customers * $1/customer = $<<210*1=210>>210
The total income he earns is $210 + $500 + $50 = $<<210+500+50=760>>760
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