Which expression is undefined?
-8+(-8)
-8+8
0+8
8+0

Which of the following expressions is equal to 2x^2+8

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below. the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10