The number of fish in a lake t t\,t years from now is Ft F_t\,Ft where
F0=800 F_0 = 800 F0=800 Ft+1=1.02(Ft−20) F_{t+1} = 1.02(F_t - 20) Ft+1=1.02(Ft−20)Work out the number of fish in the lake 3 years from now.
Practise Edexcel GCSE Maths Iteration with exam-style questions for Foundation and Higher tier. 40 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.