What is the least common multiple (LCM) of 12 and 15?

A. 30
Posted in:  Numbers -  Arithmetic -  Mathematics

If x is an integer such that 3x + 7 = 28, what is the value of x?

B. 5
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Which of the following numbers is a perfect square?

B. 64
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What is the product of 12 and 15?

A. 180
Posted in:  Numbers -  Arithmetic -  Mathematics

If x is an integer such that 3x + 5 = 20, what is the value of x?

A. 5
Posted in:  Numbers -  Arithmetic -  Mathematics