Need Help With All these Algebra Problems.

Sorry, I'm just stupid when it comes to math.

1) Rationalize the denominator of expression

http://hosted.webwork.rochester.edu/...4c60439de1.png

2)A baseball player has a batting average of 0.175. What is the probability that he has exactly 3 hits in his next 7 at bats?

The probability is ________

3)Evaluate the expression http://hosted.webwork.rochester.edu/...76740d52d1.pngand write the result in the form a+bi

4)Solve the following inequality. Write the answer in interval notation.

http://hosted.webwork.rochester.edu/...440fecefb1.png

5)NASA launches a rocket at http://hosted.webwork.rochester.edu/...signment_2/7/?seconds. Its height, in meters above sea-level, as a function of time is given by http://hosted.webwork.rochester.edu/...837d0358a1.png

Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?

The rocket splashes down after _______seconds

How high above sea-level does the rocket get at its peak?

The rocket peaks at _________meters above sea-level.

6)The equation http://hosted.webwork.rochester.edu/...874fd0d4c1.pnghas two solutions A and B where A<B and A=________ and B=_________

If you don't want to show the work on how you got it, it's fine. I understand that it's a lot of problems.