C programming language  *include comments Inside the main function write code that estimates the temperature in a freezer (in °C) given the elapsed time (hours) since a power failure. Assume this temperature (?) is given by ? = 4?2 ? + 2 − 20 where ? is the time since the power failure. The program should prompt the user to enter how long it has been since the start of the power failure in hours and minutes. Note that you will need to convert the elapsed time into hours. Example. If the user enters 3 for hours and 30 minutes, this would need to be converted into 3.5 hours

Tracking laps   Learning Objectives In this lab, you will practice writing functions, passing arguments and returning results from the function printing the result of a function call writing your code as a module Instructions Main Idea An Olympic-size swimming pool is used in the Olympic Games, where the racecourse is 50 meters (164.0 ft) in length. "In swimming, a lap is the same as a length. By definition, a lap means a complete trip around a race track, in swimming, the pool is the race track. Therefore if you swim from one end to the other, you’ve completed the track and thus you’ve completed one lap or one length." (Source: What Is A Lap In Swimming? Lap Vs Length) Write the function meters_to_laps() that takes a number of meters as an argument and returns the real number of laps. Complete the program to output the number of laps with two digits after the period. Examples Input: 150 Output : 3.00 Input: 80 Output: 1.60 Your program must define and call the following…

Chapter 5. PC #2. Retail Price Calculator (page 312) Write a program that asks the user to enter an item’s wholesale cost and its markup percentage. It should then display the item’s retail price. For example: • If an item’s wholesale cost is 5.00 and its markup percentage is 100 percent, then the item’s retail price is 10.00. • If an item’s wholesale cost is 5.00 and its markup percentage is 50 percent, then the item’s retail price is 7.50. The program should have a method named calculateRetail that receives the wholesale cost and the markup percentage as arguments, and returns the retail price of the item. Class name: RetailPriceCalculator   Here is a code: please modify this code so it works in Hypergrade when I submit it so it passes all the test casses in Hypergrade. It has to pass all the test casses in Hypergrade becausw when I submit the code in Hypercase it does not run and it says 0 out of 5 casses passed. Please fix this code. I do not need thanks for playing or…

C++  Mobile Service ProviderModify the program in Problem 5 so that it also displays how much package A customers would save if they purchased package B or C, and how much money Package B customers would save if they purchases Package C. If there would be no savings, no message should be printed. calculate the cost of all plans (A, B, and C) based on the number of minutes the user-entered. Then based on the plan user chose, compare, and calc. the difference among the plans.    this one has some error