Which graph can be used to find the solution(s) to x2 – 1 = x + 1?

Hope I helped ^^  there might be some mistakes

Step-by-step explanation:we know that

The function f(x) is a vertical parabola open upward

the vertex is the point  > is a minimumThe function g(x) is a linear equation

The y-intercept is the point  > for  find the value of g(x)

therefore

the answer in the attached figure

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.