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                ///////////////////////////////// Naming Variables ////////////////////////////////
   // Remember that we declare a new variable by typing the let keyword and then assigning a name to the variable. 

   // A variable's name is also known as an identifier.

   // In JavaScript, variables must be identified with a unique identifier. 

        let blank;

   // The identifier of the variable on the line above is "blank". 

   // There are a few rules in regards to assigning variables' identifiers (in other words, rules for naming variables in JavaScript):

      // Rule 1: Names must begin with a letter, an underscore, or a dollar sign $ (best coding practice starts names with a lowercase letter). 

          // The letter of the first word in an identifier should always be lowercase, and the first word of any proceeding words should be uppercase. 

          // This practice is called camelcase. Ex: myVariable, placeHolder, camelCase

      //Rule 2: Names are case sensitive.

          // If you declare a variable with the identifier myVariable, it cannot be accessed by saying myvariable or myVARIABLE

      //Rule 3: Reserved words cannot be used as names. 
          // There are a few words used in JS that perform specific actions, such as the let keyword that tells the computer we are declaring a new variable

          // Reserved words include JavaScript keywords, and all of the words included here:

      // The following are examples of acceptable identifiers(aka names):
         let monthlyRent = 600;
         let carNote$ = 300;
         let home_address = "789 Super Fun Ln.";
         let businessAddress2 = "326 City Rd.";
         let lunchTotal$ = 11.49;

      // You probably noticed that the examples above are assigned to different types of data, as some store numbers while others store text. 
      // Next, we are going to discuss the different data types a variable can store.

///////////////////////// Exercises /////////////////////////
// Declare new variables and convert the following phrases to an appropriate variable name, using camel casing and other naming conventions, for example the first one could be something like annualIncome or yearlyIncome.

  // 1. annual income
  // 2. bills to be paid
  // 3. number of vacation days left
  // 4. week one
  // 5. week two
  // 6. week six 

//Extra Exercises:

//1. Which of these variable names would work? (Can be more than one!) You can write yes or no under each variable (remember to write it as a comment!)

// a) let myName = "John";

// b) let -myName = "John";

// c) let $myName = "John";

// d) let _myName = "John";

// e) let .myName = "John";

//2. Come up with a variable name to store your favorite color. Make sure your name makes sense. Use the let keyword, name the variable, and then assign it your favorite color in quotes. 

//3. Which of the follow variables use camelCase correctly? (Can be more than one) Again, write yes or no under each variable as a comment. 

// a) let thisisMyVariable = "variable";

// b) let thisIsMyVariable = "variable";

// c) let thisIsAnotherVariable = "another variable";

// d) let ThisIsAnotherVariable = "another variable";

// e) let THISisanothervariable = "another variable";