Sequences and series in modellingEdexcel A-Level Maths: Mind map

Exam questions on Sequences and series in modelling

1. Aisha saves money each month. In month 1 she saves £50, and in each later month she saves £8 more than in the previous month.
   Find the first month in which Aisha saves more than £300.2 marks
2. A tree is 1.20 m tall when planted. It grows 0.50 m in the first year, and in each later year its growth is 85% of its growth in the previous year.
   Find the height of the tree after 5 years.2 marks
3. At the start of each year Ben pays £1500 into a savings account that pays 3% compound interest, added at the end of each year. The first payment is at the start of year 1 and no money is withdrawn.
   Show that the amount in the account at the end of year 3 is £4775.44.3 marks