Write the coordinates of the vertices after a dilation with a scale factor of 2, centered at the origin.

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?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)