A sequence is made using the formula:

**Term = 4n – 1**

What is the **first term** (when n = 1)?

The number of legs in a group of stools is:

Legs = 3 × number of stools

How many legs do 12 stools have?

A formula says: **y = 5x – 2**

If **x = 3**, what is **y**?

The total cost of apples is:

Total = number of apples × 30p

How much do 8 apples cost?

A number machine uses this rule:

**Output = (Input × 4) – 3**

If the input is 5, what is the output?

The area of a rectangle is:

Area = length × width

What is the area of a rectangle that is 9 m long and 4 m wide?

A sequence follows the rule: **nth term = 2n + 1**

What is the 5th term?

The cost of hiring a bike is given by the formula:

Cost = £2 + (£1 × number of hours)

How much does it cost to hire the bike for 5 hours?

A rule says: “Multiply a number by 3, then add 5.”

If the number is 6, what is the result?

The formula for the perimeter of a square is:

Perimeter = 4 × side length

What is the perimeter of a square with side length 7 cm?