Select the equations of the lines that are parallel to the line whose equation is y = 3x + 5.

6x + 2y = 12
-3x + y = 8
3y = 9x
y = -1/3x

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Select the number of ways in which a line and a circle can intersect