How to write a quadratic function in vertex form and identify the vertex?

In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Harry is at the depot in dover and has deliveries to make in edinburgh, glasgow and aberdeen. from dover which of the deliveries is the shortest distance?