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S is directly proportional to M^3. It is given that S=36 for a certain value of M. Find the value of S when this value of M is
(a) doubled
(b) reduced by 40%

  • Math -


    so if M is doubled, S must go up by 8 (2^3)

    so if M is changed to .4, S must be down by .6^3=.216

    a) 36*8
    b) 36*.216

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