Can someone answer these quickly?

C programming language please!

1. Gallons to Liters Conversion (1 user-defined function) Write a program in C that asks the user for a number of gallons from your main() function. The main) function should then convert the number of gallons to liters (3.785 liters in 1 gallon). Your main() function should then call a function to display the result Show me! 2. New Vehicle Cost Calculation (2 user-defined functions) Write a program in C that asks the user for the price for a new vehicle from your main() function. Your main() function will then send the total cost to a function that will calculate and return the sales tax the user would pay (assume 6%). Last, your main() function should call a function that will display the price of the new vehicle, the sales tax due, and the total cost of the vehicle. Show me!_ 3. Payroll Check (6 user-defined functions) Write a program in C that displays information for a payroll check. Your program must contain a function to ask the user for the total hours worked and another function for the hourly rate. Your program must contain a function that will accept the hours and rate as arguments, and calculate and return the gross pay. Your program will then send the gross pay to a function that will calculate and return the payroll tax (let's assume it's only one tax percentage at 22%). Your program will then call a function that will accep net pay. Lastly, your program will send all of the data (total hours, hourly rate, gross pay, taxes, and net pay) to a function that will neatly display all of the values. t the gross pay and taxes as arguments and return the Show me