Which pair of lines is perpendicular?
a. y=2x-1 and2y=-x+3
b. y=3x+4nand3y-x=5
c. y=-4x+2 and x+4y=6
d. y=-6x-3 and 6x-y=4

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?