This is observed variable in an experiment or study changes are determined by the presence or degree of one or more independent variables when graft this variable is usually on the vertical axis

This is the observed variable in an experiment or study whose changes are determined by the presence or degree of one or more independent variables. When graphed, this variable is usually on the vertical axis.

Step-by-step explanation:

45

step-by-step explanation:

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option