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1.

If (4 # 2 = 14) and (2 # 3 = 6), what can replace (a # b)?

2.

In a rectangular coordinate system, what is the square root of the area of a trapezoid whose vertices have
the coordinates (2, -2), (2, 3), (20, 2), (20, -2)?

3.

If the least common multiple of two prime numbers x and y is 10, where x > y, then the value of 2x + y is