Added comment : //Expressions_Industry at top of script with my name and date.
Added a comment about what I'm calculating.
Created first variable - var cost = "Retail cost"
Added prompt to state : "Please enter the cost of the product"
replaced the " " after the comma with the number 25, so it shows an example of what to place in the prompt box.
Added a comment to remind me why I created the 1st variable.
Created a second variable called retail.  This will be the price of the product to the everyday consumer.
Replaced the value of variable "retail" with a prompt, which asks the user to input the cost it will sell at retail.
Added the value of 50 into the prompt, so the user is able to review an example of the input required.
Added a comment stating why the variable was created.
Created a third variable for the number of units being sold.
Replaced the value of the variable with the prompt, please enter the number of units sold.
Corrected my original prompt due to not adding the closing parentheses.
Added the value of 2 in the prompt after the string in order to give the user and example of the input requested.
Added periods to my prompts to end the sentences.
Added a comment to the third variable in order to remember why it has been added.
Created a new variable of profit.
Commented why the variable was created.
created a nother variable that shows profit equals the retail - cost using the a new assignment operator.
Added comment to why I created the new variable.