Why shouldn’t you let a doctor put one of thoes sticks in you mouth?

answer: the solution, when is all answered right comes up like this: "you don't know who ate the ice cream"

you can now know what's the key for the exercises. each letter is numbered on the exercise according to the position it occupies  on the solution sentence.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb