4.2 Homework due Mon 28.9.15

Complete neatly in the front of your books. Calculator allowed but working must be shown. Total: 21 marks

1. A teacher has a 3% pay increase to £18,200. What was his previous salary?

   [3 marks]

2. £3000 is deposited in a bank account with an interest rate of 3.1% p.a., what will the balance be after 8 years?

   [2 marks]

3. Without a calculator, find the value of \[ \frac{5.6 \times 10^{-5}}{8 \times 10^{-8}} \] Give your answer in standard form.

   [2 marks]

4. Solve \[\frac{3x-2}{2}=\frac{4-x}{4}\]

   [3 marks]

5. Solve $3(2x+3)-4(5-3x)=1$, leaving your answer as a fraction

   [3 marks]

6. Find the gradient of the line between A(-1,4) and B(3,-8) and hence find the equation of the line

   [4 marks]

7. Pete's son is a third of his age. 8 years ago, Pete was four times his son's age. How old is Pete today? Show your method clearly. Guesses get nothing!!

   [4 marks]

ANSWERS