I think of a number x, add 5 to it. The result is then multiplied by 2 and the final result is 24. The correct algebraic statement is

1. x + 5 × 2 = 24

2. (x + 5) × 2 = 24

3. 2 × x + 5 = 24

4. x + 5 = 2 × 24

Which of the following is an equation?

1. x + 5

2. 7x

3. 2y + 3 = 11

4. 2p < 7

If the perimeter of a regular hexagon is x metres, then the length of each of its sides is

1. (x + 6) metres

2. (x − 6) metres

3. (x ÷ 6) metres

4. (6 ÷ x) metres

x = 3 is the solution of the equation

1. x + 7 = 4

2. x + 10 = 7

3. x + 7 = 10

4. x + 3 = 7