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  1. W

    Help pls

    The population of a species has been modelled by the equation P=I.3^(kt) where t is the elapsed time in days and I is the population at t=0. If the population has increased by a factor of 9 in 8 days, by what factor will it have increased over 12 days?
  2. W

    Hyperbola Locus

    If R is the point (2(cos∅ - sin∅), 3(cos∅ + sin∅)), show that the locus of R is the ellipse x^2/18 + y^2/8 =1 Thankyou!
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