Friday 13 March 2015

3.2 Homework Due Tue 17th March

To be done in front of books neatly. Show all working out. Marks: 23

Sequence notes

  1. Solve \[ \begin{align*} 3&x+2y=13 \\ -5&x+6y=81 \end{align*} \]

    [3 marks]

  2. For the sequence $-3,2,7,12...$, find $u_n$ and $u_{50}$

    [3 marks]

  3. For the sequence $24,21,18,15...$, find $u_n$ and $u_{50}$

    [3 marks]

  4. True or false, $-134$ is in the sequence $36,32,28,....$. Give a reason for your answer.

    [2 marks]

  5. Write down the first five terms of the sequence $u_n=12-5n$

    [2 marks]

  6. How many green tiles would there be in pattern 120?

    [2 marks]

  7. Expand $(3x+2)(5x-4)$

    [2 marks]

  8. Factorise $x^2-3x-28$

    [2 marks]

  9. Find $u_n$ for $-1,2,7,14,23,....$

    [2 marks]

  10. Find $u_n$ for $2,16,54,128,250....$

    [2 marks]

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