A 'Postage Assistant' will calculate the amount of postage due for letters and small packages up to 1 kilogram in weight. The inputs are: the type of item (letter, book or other package) and the weight in grams. Which of the following conform to the required contents of a test case?
A. Test the three types of item to post and three different weights.
B. Test 1: letter, 10 grams, postage 0.25. Test 2: book, 500 grams, postage 1.00. Test 3: package, 999 gram, postage.
C. Test 1: letter, 10 grams to Belgium. Test 2: book 500 grams to USA. Test 3: package, 999 grams to South Africa.
D. Test 1: letter 10 grams, Belgium, postage 0.25. Test 2: package 999 grams to South Africa, postage .

Type the correct answer in the box. spell all words correctly. which technology should andrea use? andrea owns a potato chips manufacturing unit. she has been getting complaints about the quality of the chips. she knows her product is good. she realizes that she needs to change the way the chips are packaged. she should use technology, which uses gases, such as carbon dioxide or argon, to create an air cushion, which improves the shelf life of products.

Which virus-infecting components are email messages prone to carry? one of the problems associated with the use of email communication is that email messages are prone to carry virus-infecting .

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."