To find the amount of carbohydrates in 3 ounces of mixed nuts, you would want to use the information given for 1 ounce and scale it to 3 ounces.
Since 1 ounce has 5.25 grams of carbohydrates, you would multiply the carbohydrates in 1 ounce by 3:
Multiply 3 times 5.25.
So, the correct response is:
multiply 3 times 5.25.