Atax form asks people to identify their age, annual income, number of dependents, and social security number. for each of these three variables, identify the scale of measurement that probably is used and identify whether the variable is continuous or discrete.

These variables are discrete.

Step-by-step explanation:

As we know that

Discrete variables are those variables which is countable.

Continuous variables are those variables which is not generally countable instead of this it lies in interval.

Age - countable

Annual income - countable

number of dependent - countable

social security number - countable.

Hence, these variables are discrete.

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb