It would be 1/4 of the original area, as you have just multiplied by 1/2 twice. 1/2 times 1/2 equals 1/4.
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First find 10% then double subtract $1 and you'll get a final answer
8w
he recycles 8 per week which means if you wanted to know how many he had recycled after 10 weeks you would multiply 8 by 10 to find out. so its 8w
1.09, 1.1, 1.9
Hope I helped
The slope for this line would be 2