(somewhat advanced geometry question.)
in △abc, cd is an altitude, such that ad = bc. find ac, if ab = 3 cm, and cd = sqrt3 cm
(there is no picture for the problem)
i need -i don't get it. provide a good explanation, i would like to understand the problem.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2

Y+ 2/y is it a polynomial in one variable or not? and if so, why?