Find the midpoint of the segment with the following endpoints.
(-9, -8) and (-1,2)

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Jennifer taking a quiz and has answered 13 questions so far. if there are 25 questions on jennifer test, how many questions does she have left to answer

Can anyone explain to me how to do this? anything will .