On a game show, elena is given the choice of three doors: behind one door is the grand prize; behind the others, consolation prizes. she picks door a, and the host, who knows what is behind each door, opens door b, revealing a consolation prize. the host then offers elena the opportunity to change her selection to door c. what should she do?

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

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled