Question

Write code in Java

Question 1 Directions: 1. A half-life is the amount of time it takes for a substance or entity to fall to half its original value. Caffeine has a half-life of about 6 hours in humans. Given caffeine amount (in mg) as input, output the caffeine level after 6, 12, and 24 hours.

Output each floating-point value with two digits after the decimal point, which can be achieved as follows: System.out.printf("After 6 hours: %.2f mg\n", yourValue);

Ex: If the input is:

100 the output is:

After 6 hours: 50.00 mg

After 12 hours: 25.00

mg After 24 hours: 6.25 mg

Question 2. The East Coast sales division of a company generates 65 percent of total sales. Based on that percentage, write a program that will predict how much the East Coast division will generate based on the input. Hint: Use the value 0.65 to represent 65 percent.

Ex: If the input is:

8300000

the output is:

East coast sales prediction: $5,395,000.00

Answer 1

import java.util.Scanner;

public class LabProgram {

    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        double caffeineMg;

        caffeineMg = scnr.nextDouble();

        System.out.printf("After 6 hours: %.2f mg\n", caffeineMg/2);
        System.out.printf("After 12 hours: %.2f mg\n", caffeineMg/4);
        System.out.printf("After 24 hours: %.2f mg\n", caffeineMg/16);
    }
}

import java.util.Scanner;

public class LabProgram {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double sales = in.nextDouble() * 0.65;
        System.out.printf("East coast sales prediction: $%,.2f\n", sales);
    }
}