Exponents and Equations

[jllera1]

Sorry, I'm not exactly sure how to put the problems, but here goes:

Question #1

(^4)
(-2x)^(1/3)
__________
(y)^(1/2)*(z)^(1/6) *Again the whole problem is to ^4


Question #2

(7-3x)^(1/2) + (3/2)x * (7-3x)^(-1/2)
________________________________
7-3x

Question #3

1 + x = 1
________ _______ ____
x - 1 3x - 2 3


Question #4

Solve for i: A=P (1 + i/100)^2


I'm actually in calculus, but now our teacher is having us do some problems from my freshman year. For the life of me, I can't remember. I appreciate your help. These are just a few problems out of about 70. What I'm doing is getting a few guides so that I can try and remember and then apply it to all of the others. Thank you so much

 

[tkhunny]

#3 Answered Privately. Please don't submit problems more than once. Please don't forget to show your work.

 

[dagr8est]

I could show you how to do all of them but I hate typing long math problems on a computer. #4 is simple though so I'll do that one.

A=P(1+i/100)^2
A/P=(1+i/100)^2
sqrt(A/P)=1+i/100
100sqrt(A/P)=100+i
100sqrt(A/P)-100=i

 

[tkhunny]

Whoops! I meant #4. Same answer.

 

[jllera1]

Thanx

Thank you, to all that have helped. I have been trying to work on the others. I can do them fine with a calculator, but once you take away my life line I feel lost. The prof. wants us not to use one, and I haven't done these problems in a few years.