Algebra I Quiz

Question 1:   If 5y + 3x = 4, what is the value of 15y + 9x?

Question 2: If a, b and c are consecutive integers, a < b < c, and a + b + c = 96, what is the value of b?

Question 3:    What is m if the following system of equations has an infinity of solutions?
2x + 6y = 3
4x + 3my = 6

Question 4:   
|2·x + 1| = 3
|x + 5| = 6
What value of x satisfies both of the equations above?

Question 5:   What is the value of (2^{x + 1} - 2^x) / (2^x - 2^{x - 1})?

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