NEED HELP WITH QUESTIONS (a). As a renowned Event Organizer, you have been advising your clients to buy soft drinks from vending machines. Your clients can only pay for their purchases by inserting coins into the vending machines. Using pseudo code, outline the algorithm for paying for these purchases. Explain your pseudo
code.

(b)..You and an electronic engineering student have teamed up to build a robot for detecting coronavirus
patients and carriers. You have developed an algorithm for use in building and operating the
robot; and you are currently analysing your algorithm. Clearly distinguish between worst-case running time and best-case running time in algorithm analysis; and give relevant practical
examples to illustrate your answer.

(c)..AIT has established a Help Desk at its KCC Campus; and the Officer-in-charge is using a Help Desk
application to store all requests that come through from members of the University community (comprising Students, Lecturers, Deans, President,
Technicians, Cleaners, etc.) and then assign them for processing as resources become available. Discuss
the data structure that you would recommend for use in such a help desk application at this university; and
use appropriate examples to illustrate your answer.

Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."

1. which of these is not true about torsion bars? a. they can be used to adjust ride height b. they can be adjusted anytime since they don't affect alignment angles c. they attach between the frame and the lower control arm d. they twist to produce a spring effect

Which spreadsheet operation does a look function perform?