text: #include "variables.h"
  
  //example
  int add_numbers(int num1, int num2)
  {
  	return num1 + num2;
  }
  
  //write code for multiply_numbers function here
  //function returns product of num1 and num2
  int multiply_numbers(int num1, int num2)
  {
  	return num1 * num2;
  }
  
  double get_sales_tax_amount(double meal_amount)
  {
  	double tax_rate = 0.0675;
  	return tax_rate * meal_amount;
  }
  
  double get_tip_amount(double meal_amount, double tip_rate)
  {
  	return meal_amount * tip_rate;
  }
  