The number of bacteria in a sample t t\,t hours from now is Bt B_t\,Bt where
B0=1200 B_0 = 1200 B0=1200 Bt+1=1.05(Bt−50) B_{t+1} = 1.05(B_t - 50) Bt+1=1.05(Bt−50)Work out the number of bacteria in the sample 3 hours 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.