Rosario swam twice as many laps as her younger brother Albert. Their father
swam three times as many laps as Albert.
If Rosario, Albert, and their father swam
a total of 72 laps, how many laps did
Rosario swim?

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Which expression is equivalent to (4x^3*y^5)(3x^5*y)^2 \a) 24x^13*y^7b) 36x^13*y^7c) 36x^28*y^7d) 144x^16*y^12

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?