Final answer:
The expression 1+x in this scenario represents the total price after markup, with '1' being the original price and 'x' being the additional markup percentage in decimal form.
Step-by-step explanation:
In the expression 1+x, which gives the markup price of a computer, where x is the percent of the markup written in decimal form, 1+x represents the total price after the markup has been applied. This can be understood by breaking down the expression: '1' represents the original price of the computer (100% of the original price), and 'x' represents the markup percentage in decimal format. When you add 'x' to 1, you are effectively increasing the original price by the percentage that 'x' represents.
For example, if a computer's original price is $500 and there's a 20% markup, 'x' would be 0.20. The expression 1+x would thus be 1.20, and the markup price would be 1.20 times $500, which equals $600. The '1' in this case is equivalent to the original price, and the 0.20 represents the additional 20% that is added to the initial price to get the total selling price.