Percentage math problems

How do you do percentage math problems?

Do planes only contain exactly three points??

Okay so my bro was droped from school bt my mom still wants him to do work so doese any one no of any good math|science probl...

Does any one know how to find the least common factor of this problem? LCM of 2t^2+t-3, 2t^2+5t+3

You surveyed 25 people and learned that 23 of those people were in favor of building a new animal shelter. What is the probab...

this is the question: The domain of the function f(x) = -6x+5 is {-2, 0, 4}. Find the range.

I need a math problem where the roots are imaginary ... algebra 2 trig!!! I am doing a project and this determines if I pass ...

Well this problem really stumped me and I don't know what to do HELP! 3^(2x)-2*3^(x+5)+3^(10)=0 solve for x.

It's a real life problem nd I should have paid more attention in math class :$ I got 132. What is the total amount of grams ...

It says to find the number of sides, then it lists 172. How do I do it? I'm thinking it has something to do with 180(n - 2), ...