ZEF manufactures fridge for the commercial market. One of the crucial parts required for the assembly of this product is part ‘A’. Requirement for part ‘A’ is 277 units per month at RM 84 per unit and the handling cost is 25% from the unit price. The cost for preparing the order is RM19.00. Assume that the company operates on a 288 working days per year. a) Compute the economic order quantity.
(2 marks)
b) How many orders should be placed each year?
(2 marks)
c) What is the reorder point if the part requires 3 days to arrive at the factory?
(2 marks)
d) Draw a picture that illustrates an inventory cycle with suitable details.

Idon understand these and need some ! ?

Write a car class having two private member variables called tank and speed. write public methods called pumpgas and gofast. the method pumpgas gets an integer for gas that must be pumped. that value needs to be added to tank (no more than 20 gallons). it must return the amount of gas that is purchased ($4 per gallon). the method gofast should increase the speed by 5 each time it is called. write a constructor for the above class that initialized both variables to zero. write a tostring to display both the tank and speed when the car is printed. modify the car class to implement the interface comparable and an interface called carinter having the public methods in carinter. write the main program to create an array of size 5 of type car. create 5 car objects having each location of the array to refer to one of the cars. test the pumpgas, gofast, equals method on the array items. write an enhanced loop to print all the car values (using a tostring written last time).write a generic method to find the minimum of four items. pass int, double, char, string and car objects to test this method.

"gps interaction and cognitive process" respond to the following: imagine that you have been asked to design a gps product that will have voice recognition and bluetooth capability. discuss and conceptualize a user interaction model. predict two (2) problems that may arise in gps products with voice recognition and bluetooth capability. recommend solutions for each of these issues. attention is one of the six cognition processes. when attention is applied to a design, the goal is to make it easier for the end user to quickly locate where he / she should type information on the computer or mobile device screen. compare and contrast how the google search engine and the microsoft bing search engine employ the attention cognition process. provide your opinion as to which search engine better employs the attention cognition process and explain why.