Final answer:
To calculate 38 percent of 22, convert 38 percent to a decimal (0.38) and multiply it by 22, which is represented by the expression 0.38×22.
Step-by-step explanation:
The expression that can be used to find 38 percent of 22 is A) 0.38×22. To calculate a percentage of a number, you convert the percent to a decimal by dividing by 100 and then multiply it by the number in question. Since 38 percent as a decimal is 0.38, you would multiply 0.38 by 22 to find 38 percent of 22.