Fast pls will mark brainliest - what model is best to use for large complex accounting software that can be broken down into many modules?

waterfall model
spiral model
v model
rad model

What refrigerant has been approved for new household refrigerators and freezers

Write a program that lets the user play the game of rock, paper, scissors against the computer. the program should work as follows. 1. when the program begins, a random number in the range of 1 through 3 is generated. if the number is 1, then the computer has chosen rock. if the number is 2, then the computer has chosen paper. if the number is 3, then the computer has chosen scissors. (don’t display the computer’s choice yet.) 2. the user enters his or her choice of “rock”, “paper”, or “scissors” at the keyboard. (you can use a menu if you prefer.) 3. the computer’s choice is displayed. 4. a winner is selected according to the following rules: • if one player chooses rock and the other player chooses scissors, then rock wins. (the rock breaks the scissors.) • if one player chooses scissors and the other player chooses paper, then scissors wins. (scissors cuts paper.) • if one player chooses paper and the other player chooses rock, then paper wins. (paper wraps rock.) • if both players make the same choice, the game must be played again to determine the winner. be sure to divide the program into functions that perform each major task. include the code and the console output from running your program with test inputs in your report.

4.9: population write a program that will predict the size of a population of organisms. the program should ask the user for the starting number of organisms, their average daily population increase (as a percentage, expressed as a fraction in decimal form: for example 0.052 would mean a 5.2% increase each day), and the number of days they will multiply. a loop should display the size of the population for each day. prompts, output labels and messages.the three input data should be prompted for with the following prompts: "enter the starting number organisms: ", "enter the daily increase: ", and "enter the number of days the organisms will multiply: " respectively. after the input has been read in successfully, a table is produced, for example: 2 300.0 4 675.0 under the heading is a line of 29 dashes followed by one line for each day, showing the day number and the population at the beginning of that day. input validation.do not accept a number less than 2 for the starting size of the population. if the user fails to satisfy this print a line with this message "invalid. must be at least 2. re-enter: " and try to read the value. similarly, do not accept a negative number for average daily population increase, using the message "invalid. enter a non-negative number: " and retrying. finally, do not accept a number less than 1 for the number of days they will multiply and use the message "invalid. enter 1 or more: ".