On Monday and Tuesday Bart finished 3 + 4 = <<3+4=7>>7 surveys.
Each survey has 10 questions, so he answered 10 * 7 = <<10*7=70>>70 questions.
Bart gets paid $0.2 for each questions, so he earned 70 * $0.2 = $<<70*0.2=14>>14.
#### 14