He starts with .25+.25=<<.25+.25=.5>>.5 pounds of vegetables a day
After doubling that it goes to .5*2=<<.5*2=1>>1 pound a day
So he eats 1*7=7 pounds of asparagus and broccoli per week
So he eats a total of 7+3=<<7+3=10>>10 pounds of vegetables a week
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