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Q21: Answers – Paper 4 – November 2018
Q21: Answers – Paper 4 – November 2018
Mark Scheme
Working
The number of gannets on an island is assumed to follow this exponential growth model.
N = 0.45 x 1.07x
N is the number of gannets, in thousands.
x is the number of years after 1st January 2010.
a) Complete the table for N = 0.45 x 1.07x
b) Draw the graph of N = 0.45 x 1.07x
c) Use the graph to find the year when the gannet population is predicted to reach 1000.
Question
21) The number of gannets on an island is assumed to follow this exponential growth model.
N = 0.45 x 1.07x
N is the number of gannets, in thousands.
x is the number of years after 1st January 2010.
a) Complete the table for N = 0.45 x 1.07x
[2 marks]
b) Draw the graph of N = 0.45 x 1.07x
[2 marks]
c) Use the graph to find the year when the gannet population is predicted to reach 1000.
[2 marks]