Is the following a function? x y
6 2
-1 -1
4 3
a) yes
b) no
c) cant be determined
d) unknown

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

I'm confused on this could anyone me and show me what i need to do to solve it.