Susan's stylist has done a great job of coloring her hair. she wants to leave a 20 percent tip. if the bill was $150, how much should she tip her stylist?

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