1.

For all real numbers b and c such that the product ofc and 3 is b, which of the following expressions represents the sum of c and 3 in terms of b?A. b+3B. 3b + 3C. 3(b +3)b +3E. 2 +3

Answer»

First let us set up the equation we are told—that the product of c and 3 is b.

3c=b

Now we must isolate c so that we can add its value to 3.

3c=b

c=b3

Finally, let us add this value to 3.

b3+3

Our final answer is E, b3+3

[Note: Because this problem uses variables in both the problem and in the answer choices—a key feature of a PIN question—you can always use the strategy of plugging in numbers to solve the question.]



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