The effect of the time of day a science class is taught on test scores is being studied in an experiment. Which of these is most likely to be an extraneous
factor that could also affect test scores?
O A. Principal of the school
B. Student clothing
O C. Length of class period
O D. Color of the school hallways
SUB

it could be the colour of the school hallways

(x+3)(x+7)

step-by-step explanation:

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answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb