4400 Higher June 2005 Paper 3 Q2
2 Solve \(5(2x + 3) = 30\)
(3)
| Scheme | Marks |
|---|---|
| \(10x + 15 = 30\) or \(2x + 3 = 6\) | M1 |
| \(10x = 30 - 15\) or \(2x = 6 - 3\) | M1 |
| \(1\frac{1}{2}\) | A1 |
| (3) | |
| (3 marks) |
Notes
M1: For \(10x + 15\) or \(2x + 3 = 6\)
M1: For isolating \(x\) term in \(ax + b = c\)
A1: For \(1\frac{1}{2}\) oe inc \(\frac{3}{2}\)