THERE ARE 6 BOOKS ON A READING LIST. STUDENTS MUST READ ANY 3 OF THE BOOKS ON THE LIST. IN HOW MANY WAYS CAN A STUDENT SELECT AN
1 answer:
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The final result is: x = 4, 3.
There can be no negative in a sqrt
so x+1 must be equal or greater then 0
x+1
0
x -1
so all answers must be greater then or equal to -1
-1,0,1,2,3,4,5,6,7,8
(-1,infinity) is the domain
so x+1 must be equal or greater then 0
x+1
x
so all answers must be greater then or equal to -1
-1,0,1,2,3,4,5,6,7,8
(-1,infinity) is the domain