The blue print of Daisy's new home was drawn with a scale factor of 1 foot = 0.33 inch. The actual length of
the living room was to measure 12 feet. Determine the
length of the living room shown in the blueprint.

take it another

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answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

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