Final answer:
Leisa is incorrect because she did not follow the order of operations. The expression 2 + 5(4) should be solved by first multiplying 5 by 4 to get 20, then adding 2 for a correct total of 22, making Harold's answer correct.
Step-by-step explanation:
The question at hand requires us to solve a simple math expression using the order of operations. According to the rules of mathematics, which are universally valid, we must perform multiplication before addition. Therefore, the correct calculation of the expression 2 + 5(4) is to first multiply 5 by 4 and then add 2 to the result.
Following the correct order of operations, we multiply 5 by 4 to get 20. Then, we add 2 to 20, which equals 22. So, the correct answer to the expression is 22. This means that Harold's calculation is correct, and Leisa's calculation is incorrect. So, to answer the question, Leisa is wrong, as she made a calculation error by not following the proper order of operations.