Re: Exponents and Equations

1. That's correct.

2. It's correct in my opinion.

3. $\displaystyle (x^2+3x-10)(x+5)^{-1} = \frac{x^2+3x-10}{x+5}$, can you factorize $\displaystyle x^2+3x-10$?

Re: Exponents and Equations

I'm going to put my two cents in here. For problem 1 you probably should give the answer as 1/10 not 0.1. (Math at this level isn't usually expressed in digits.) For problem 2 the problem statement is given as logs so your answer probably be in logs as well. (So pick the 7 log 2.)

-Dan

Re: Exponents and Equations

Aha! For the last one I thought about making the exponent positive by putting a 1 on top of that last bracket... but your answer should have been obvious to me!! D'oh. Thanks to everyone who replied to this thread.