My sister is four years younger than me. the sum of our ages is equal to my age in 10 years. how old am i now?

answer: a.   one is a factor of every whole number since every number is divisible by itself.

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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