Where would you insert a parentheses to make each statement true?

13.) 15-(3x4)+9                                                                                                               15-12+9                                                                                                                     3+9                                                                                                                          12

You need to put the parentheses around 3x4 

Tom is incorrect.

Step-by-step explanation:

A square by definition implies that all sides of the square are the same measurements. In the case of finding the area, A = s². Tom, however, solved it as A = 2s.

In this case:

Area of square = s² = 11² = 121 ft²

121 ft² is the correct measurement.

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