John takes 3 days off of streaming per week.  On the days he does stream, he streams for 4 hours at a time and makes $10 an hour.  How much does he make a week?
He streams for 7-3=<<7-3=4>>4 days a week
So he streams 4*4=<<4*4=16>>16 hours a week
That means he makes 16*10=$<<16*10=160>>160 a week
#### 160