2x(3x7) and 2x3)x7 are equivalents

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

The domain of a function can be represented by which one of the following options? o a. a set of output values o b. a set of f(x) values o c. a set of input values o d. a set of both input and output values