John was asked to solve the following system using multiplication and addition. He tried twice to come up with an equivalent set of equations. Analyze each of John's attempts. Tell whether the attempt is an accurate and equivalent system of equations. Describe, in complete sentences, which operations were completed in each system and tell why or why not they were accurate operations.

Original System of Equations:

7x - 3y = 4

2x - 4y = 1

Attempt #1:

28x - 12y = 16

-6x + 12y = -3

Attempt #2:

14x - 6y = 4

-14x + 28y = 1

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

For the inequality |c| < |d| to be true, which of the following must be true?

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