1. I think you are right on this one. Since it said "distinct" 4 letter words, then it is not just asking for different combinations.
2. There are different ways to answer this question. The easiest way would be to recognize that 14 2/7= 100/7. Therefore, 1% would be 1/7. 6% would equal 6/7.
3. First of all, take the derivative of x^2. This will get you 2x. Since you want the slope at x=1, sub in 1 for x. 2(1)=2.
3. yes the slope of f at 1 is 2, but Anonymous is one step short -- the questions asks for the normal line -- the one that's perpendicular to it -- neg. recipr. -- -1/2
Oops, I didn't sign in, did I? But you'll know who I am.
