Of 13 possible books, you plan on taking 7 with you on a vacation. how many different collections of 7 books can you take?

i belive those are the ones that are under 90 degreese.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

cant open file sorry!

step-by-step explanation:

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