Four different positive integers , , , satisfy the equation
(9 − )(9 − )(9 − )(9 − ) = 9.
What is the value of + + + ?
A 20
B 24
C 28
D 32
E 36

Find equation of line with slope equals 8 and passing through (6,53)

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?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?