| 4:2:17
Any time you replace all "x"s with "x + h" (where h is any number) the graph shifts right or left. If h is positive, the graph shifts left. If x is negative, the graph shifts right. In this case, "x" in f(x) is replaced by "x+2" which shifts the graph left 2, so C is the correct answer.
4:4:8
This one is a killer, partially because lots of people misinterpret the question. This is NOT the same as [(1/(a^2))(1/(b^3))]^6. It is [a^(1/2)b^(1/3)]^6
To solve it, first distribute the exponent (the 6) and simplify to (a^3)(b^2)=432.
Now it's still a tough question. The most reasonable way I've found to solve this is to factor 432. 432 = (3^3)(2^4) So, the b must be 3. Likewise the a must be 4 (since 2^4 = 4^2)
Therefore ab = 12
Hope that helps. | 
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