Frank’s grandson was asked to evaluate the following expression.

Frank gave the answer as 8, but his grandson gave the answer as 14. The grandson explained that the answer is 14 because of the “Order of Process rule,” which says that when evaluating expressions, we proceed from right to left rather than left to right.

(a) Whose answer was correct for this expression, Frank’s or his grandson’s?(b) Was the reasoning for the correct answer valid? Explain.

Transcribed Image Text:

9 + 15 + 3