In this question, assume that the car uses the same amount of petrol for each mile it travels. A car uses 55 litres of petrol to travel 495 miles.

How much petrol would the car use on a trip of 160 miles?
Give your answer to the nearest litre.

In which form is the following function written? y = - 2(x – 3)(x + 5)

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.