Evaluate the expression  \(x^2+3x-4\)  when:

1. \(x=1\)  (2 marks)
   

   --- 2 WORK AREA LINES (style=lined) ---

2. \(x=3\)  (2 marks)
   

   --- 2 WORK AREA LINES (style=lined) ---

Evaluate the expression  \(-2x^2\)  when:

1. \(x=1\)  (1 mark)
   

   --- 2 WORK AREA LINES (style=lined) ---

2. \(x=-2\)  (2 marks)
   

   --- 2 WORK AREA LINES (style=lined) ---

3. \(x=-\dfrac{1}{2}\)  (2 marks)
   

   --- 4 WORK AREA LINES (style=lined) ---

Evaluate the expression  \(w^2\)  when:

1. \(w=4\)  (1 mark)
   

   --- 1 WORK AREA LINES (style=lined) ---

2. \(w=-1\)  (2 marks)
   

   --- 1 WORK AREA LINES (style=lined) ---

3. \(w=\dfrac{1}{3}\)  (2 marks)
   

   --- 1 WORK AREA LINES (style=lined) ---

Evaluate the expression  \(\dfrac{c}{2}-\dfrac{b}{3}+a\)  when  \(a=-4\),  \(b=-3\)  and  \(c=10\).  (2 marks)

Evaluate the expression  \(\dfrac{20}{c}+\dfrac{15}{d}\)  when  \(c=-2\)  and  \(d=3\).  (2 marks)

Evaluate the expression  \(11+a-3b\)  when  \(a=13\)  and  \(b=8\).  (2 marks)

Evaluate the expression \(-2x+7y\)  when  \(x=1\)  and  \(y=-2\).  (2 marks)

Evaluate the expression \(4m-5n\)  when  \(m=2\)  and  \(n=4\).  (2 marks)

Evaluate the expression \(3z+11\)  when  \(z=3\).  (1 mark)

Evaluate the expression \(-2-5m\)  when  \(m=-1\).  (1 mark)

Evaluate the expression \(10-2y\)  when  \(y=4\).  (1 mark)

When \(\large x\)\(=5\) and \(\large y\)\(=-2\) the value of the expression \(2x+3y\) is:

1. \(4\)
2. \(8\)
3. \(16\)
4. \(-7\)

When \(\large a\)\(=2\) and \(\large b\)\(=-1\) the value of the expression \(a+b\) is:

1. \(-21\)
2. \(-2\)
3. \(-1\)
4. \(1\)

When \(x=4\) the value of the expression \(3\times x\) is:

1. \(34\)
2. \(7\)
3. \(12\)
4. \(12x\)