You receive a salary of $400 each week plus 12.5% commission on all sales. In on week you sold $2300 worth of merchandise. What is your total earnings for that week.

400 + (0.125 * 2300) = ?

To calculate your total earnings for the week, you need to add your base salary and the commission earned from sales.

First, calculate the commission earned on sales:
Commission = (Percentage/100) * Sales
Commission = (12.5/100) * $2300

To find the total earnings, add the commission to the base salary:
Total Earnings = Base Salary + Commission
Total Earnings = $400 + Commission

Let's calculate the commission first:
Commission = (12.5/100) * $2300
Commission = 0.125 * $2300

Now, we can find the total earnings:
Total Earnings = $400 + Commission
Total Earnings = $400 + (0.125 * $2300)

To find the commission, multiply the sales amount ($2300) by the commission rate (12.5%):
Commission = 0.125 * $2300
Commission = $287.50

Finally, calculate the total earnings by adding the base salary and commission:
Total Earnings = $400 + $287.50
Total Earnings = $687.50

Your total earnings for that week are $687.50.